References of "2011"
     in
Bookmark and Share    
Full Text
See detailAvantages matrimoniaux. Notion, clauses dissymétriques, impact fiscal
Leleu, Yves-Henri ULg

in Van Gysel, A. (Ed.) Conjugalité et décès (2011)

Detailed reference viewed: 64 (26 ULg)
Full Text
Peer Reviewed
See detailL’artiste scénographe ou comment réinventer l’écriture des expositions
Bawin, Julie ULg

in Textyles : Revue des Lettres Belges de Langue Française (2011), 40

Detailed reference viewed: 97 (16 ULg)
Full Text
Peer Reviewed
See detailEvaluating the reliability of analytical results using a probability criterion: a Bayesian perspective
Rozet, Eric ULg; Govaerts, B.; Lebrun, Pierre ULg et al

in Analytica Chimica Acta (2011), 705

Methods validation is mandatory in order to assess the fitness of purpose of the developed analytical method. Of core importance at the end of the validation is the evaluation of the reliability of the ... [more ▼]

Methods validation is mandatory in order to assess the fitness of purpose of the developed analytical method. Of core importance at the end of the validation is the evaluation of the reliability of the individual results that will be generated during the routine application of the method. Regulatory guidelines provide a general framework to assess the validity of a method, but none address the issue of results reliability. In this study, a Bayesian approach is proposed to address this concern. Results reliability is defined here as “the probability of an analytical method to provide analytical results within predefined acceptance limits around their reference or conventional true concentration values over a defined concentration range and under given environmental and operating conditions.” By providing the minimum reliability probability needed for the subsequent routine application of the method, as well as specifications or acceptance limits , the proposed Bayesian approach provides the effective probability of obtaining reliable future analytical results over the whole concentration range investigated. This is summarized in a single graph: the reliability profile. This Bayesian reliability profile is also compared to two frequentist approaches, the first one derived from the work of Dewé et al. [Dewé W., Govaerts B., Boulanger B., Rozet E., Chiap P., Hubert Ph., Chemometr. Intell. Lab. Syst. 85 (2007) 262-268] and the second proposed by Govaerts et al. [B. Govaerts, W. Dewé, M. Maumy, B. Boulanger, Qual. Reliab. Engng. Int. 24 (2008) 667-680]. Furthermore, to illustrate the applicability of the Bayesian reliability profile, this approach is also applied here to a bioanalytical method dedicated to the determination of ketoglutaric acid (KG) and hydroxymethylfurfural (HMF) in human plasma by SPE-HPLC-UV. [less ▲]

Detailed reference viewed: 66 (26 ULg)
Full Text
Peer Reviewed
See detailInfluence of response prepotency strength, general working memory resources, and specific working memory load on the ability to inhibit predominant responses: A comparison of young and elderly participants
Grandjean, Julien ULg; Collette, Fabienne ULg

in Brain & Cognition (2011), 77

One conception of inhibitory functioning suggests that the ability to successfully inhibit a predominant response depends mainly on the strength of that response, the general functioning of working memory ... [more ▼]

One conception of inhibitory functioning suggests that the ability to successfully inhibit a predominant response depends mainly on the strength of that response, the general functioning of working memory processes, and the working memory demand of the task (Roberts, Hager, and Heron, 1994). The proposal that inhibition and functional working memory capacity interact was assessed in the present study using two motor inhibition tasks (Go/No-Go and response incompatibility) in young and older participants. The strength of prepotency was assessed with a short or long training phase for the response to be inhibited. The influence of working memory resources was evaluated by administering the tasks in full versus divided attention conditions. The effect of working memory load was manipulated by increasing the number of target and distracter items in each task. Results showed no effect of prepotency strength, whereas dividing attentional resources and increasing working memory load were associated with greater inhibitory effects in both groups and for both tasks. This deleterious effect was higher for older participants, except in the working memory load condition of the Go/No-Go task. These results suggest an interactive link between working memory and response inhibition by showing that taxing working memory resources increases the difficulty of inhibiting prepotent responses in younger and older subjects. The additional detrimental effect of these factors on healthy elderly subjects was related to their decreased cognitive resources and to their shorter span size. [less ▲]

Detailed reference viewed: 33 (7 ULg)
Full Text
See detailLegendre, Pierre: „Magistri Legis. Eine Studie zur dogmatischen Funktion im industriellen System“
Hackbarth, Sabine ULg

in Zeitschrift für Medien- und Kulturforschung (2011), 2

Detailed reference viewed: 18 (0 ULg)
Full Text
See detailLa rédaction d'un protocole
Bruyère, Olivier ULg

Learning material (2011)

Detailed reference viewed: 15 (4 ULg)
See detailIMISCOE Research Network, Training and Research Inventory
Gsir, Sonia ULg

Report (2011)

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailPlectolyngbya hodgsonii: a novel filamentous cyanobacterium from Antarctic lakes
Taton, Arnaud; Wilmotte, Annick ULg; Smarda, Jan et al

in Polar Biology (2011), 34

A special cluster of filamentous, false-branched cyanobacteria, isolated from littoral mat samples in coastal lakes of the Larsemann Hills region (coll. by D. Hodgson) was studied by a polyphasic approach ... [more ▼]

A special cluster of filamentous, false-branched cyanobacteria, isolated from littoral mat samples in coastal lakes of the Larsemann Hills region (coll. by D. Hodgson) was studied by a polyphasic approach. This morphotype has several characters corresponding to the traditional genera Leptolyngbya (morphology of trichomes), Pseudophormidium (type of false branching) or Schizothrix (occasional multiple arrangement of trichomes in the sheaths). However, this cluster of strains is distinctly isolated according to its phylogenetic position (based on 16S rRNA gene sequences), and thus, a separate generic classification is justified. The cytomorphology of this generic entity is also characteristic. Therefore, a new genus (Plectolyngbya with the type species P. hodgsonii) was described. [less ▲]

Detailed reference viewed: 14 (0 ULg)
Peer Reviewed
See detailMicrostructure, crystalline phases and pore morphology of Onggi
Pontikes, Yiannis; Kerckhofs, Greet ULg; Kim, Ungsoo et al

in Proceedings ECerS XII (2011)

Detailed reference viewed: 6 (0 ULg)
Full Text
Peer Reviewed
See detailExperience-dependent induction of hypnagogic images during daytime naps: a combined behavioural and EEG study.
Kussé, Caroline ULg; Shaffii, Anahita ULg; Schrouff, Jessica ULg et al

in Journal of Sleep Research (2011)

This study characterizes hypnagogic hallucinations reported during a polygraphically recorded 90-min daytime nap following or preceding practice of the computer game Tetris. In the experimental group (N ... [more ▼]

This study characterizes hypnagogic hallucinations reported during a polygraphically recorded 90-min daytime nap following or preceding practice of the computer game Tetris. In the experimental group (N = 16), participants played Tetris in the morning for 2 h during three consecutive days, while in a first control group (N = 13, controlling the effect of experience) participants did not play any game, and in a second control group (N = 14, controlling the effect of anticipation) participants played Tetris after the nap. During afternoon naps, participants were repetitively awakened 15, 45, 75, 120 or 180 s after the onset of S1, and were asked to report their mental content. Reports content was scored by three judges (inter-rater reliability 85%). In the experimental group, 48 out of 485 (10%) sleep-onset reports were Tetris-related. They mostly consisted of images and sounds with very little emotional content. They exactly reproduced Tetris elements or mixed them with other mnemonic components. By contrast, in the first control group, only one report out of 107 was scored as Tetris-related (1%), and in the second control group only three reports out of 112 were scored as Tetris-related (3%; between-groups comparison; P = 0.006). Hypnagogic hallucinations were more consistently induced by experience than by anticipation (P = 0.039), and they were predominantly observed during the transition of wakefulness to sleep. The observed attributes of experience-related hypnagogic hallucinations are consistent with the particular organization of regional brain activity at sleep onset, characterized by high activity in sensory cortices and in the default-mode network. [less ▲]

Detailed reference viewed: 25 (8 ULg)
Full Text
See detailorigines de la vie: où, quand, comment?
Javaux, Emmanuelle ULg

Speech (2011)

Detailed reference viewed: 16 (4 ULg)
Full Text
Peer Reviewed
See detailGlycemic Variability, Hypoglycemia and Organ Failure in the Glucontrol Study
Penning, Sophie ULg; Le Compte, Aaron J.; Preiser, Jean-Charles et al

in 10th Belgian Day on Biomedical Engineering (2011)

Detailed reference viewed: 13 (3 ULg)
Full Text
Peer Reviewed
See detailEffects of light on cognitive brain responses depend on circadian phase and sleep homeostasis.
Vandewalle, Gilles ULg; Archer, Simon N; Wuillaume, Catherine et al

in Journal of biological rhythms (2011), 26(3), 249-59

Light is a powerful modulator of cognition through its long-term effects on circadian rhythmicity and direct effects on brain function as identified by neuroimaging. How the direct impact of light on ... [more ▼]

Light is a powerful modulator of cognition through its long-term effects on circadian rhythmicity and direct effects on brain function as identified by neuroimaging. How the direct impact of light on brain function varies with wavelength of light, circadian phase, and sleep homeostasis, and how this differs between individuals, is a largely unexplored area. Using functional MRI, we compared the effects of 1 minute of low-intensity blue (473 nm) and green light (527 nm) exposures on brain responses to an auditory working memory task while varying circadian phase and status of the sleep homeostat. Data were collected in 27 subjects genotyped for the PER3 VNTR (12 PER3(5/5) and 15 PER3(4/4) ) in whom it was previously shown that the brain responses to this task, when conducted in darkness, depend on circadian phase, sleep homeostasis, and genotype. In the morning after sleep, blue light, relative to green light, increased brain responses primarily in the ventrolateral and dorsolateral prefrontal cortex and in the intraparietal sulcus, but only in PER3(4/4) individuals. By contrast, in the morning after sleep loss, blue light increased brain responses in a left thalamofrontoparietal circuit to a larger extent than green light, and only so in PER3(5/5) individuals. In the evening wake maintenance zone following a normal waking day, no differential effect of 1 minute of blue versus green light was observed in either genotype. Comparison of the current results with the findings observed in darkness indicates that light acts as an activating agent particularly under those circumstances in which and in those individuals in whom brain function is jeopardized by an adverse circadian phase and high homeostatic sleep pressure. [less ▲]

Detailed reference viewed: 38 (3 ULg)
Full Text
See detailCompte rendu : Joseph BEAUJEAN, «Auteurs de dictionnaires et autres documents où l'on trouve les noms en wallon "liégeois" de plantes sauvages, utilitaires ou ornementales»
Baiwir, Esther ULg

in Wallonnes : Chronique de la Société de Langue et de Littérature Wallonnes (2011), 2

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailUsing test station and on-farm data for the genetic evaluation of Piétrain boars used on Landrace sows for growth performance
Dufrasne, Marie ULg; Rustin, Maité; Jaspart, Véronique et al

in Journal of Animal Science (2011), 89

The aim of this study was to develop a new genetic evaluation model to estimate the genetic merit of boars for growth based on 1) performance of their crossbred progeny fattened in the test station and 2 ... [more ▼]

The aim of this study was to develop a new genetic evaluation model to estimate the genetic merit of boars for growth based on 1) performance of their crossbred progeny fattened in the test station and 2) their own performance or those of relatives from the on-farm testing system. The model was a bivariate random regression animal model with linear splines and was applied to Piétrain boars from the Walloon Region of Belgium mated with Landrace sows. Data contained 1) 12,610 BW records from the test station collected on 1,435 crossbred pigs from Piétrain boars and Landrace sows, and 2) 52,993 BW records from the on-farm testing system collected on 50,670 pigs with a breed composition of at least 40% Piétrain or Landrace. Since 2007, 56 Piétrain boars have been tested in the station. Data used to estimate variance components and breeding values were standardized for the age to take into account heterogeneity of variances and then pre-adjusted at 210 d of age to put all records on the same scale. Body weight records from the test station and from the on-farm testing system were considered as 2 different traits. The heterosis effect was modeled as fixed regression on the heterozygosity coefficient. As all test station animals were similarly crossbred, smaller variation in heterozygosity caused the sampling error of the regression estimate at 210 d to be larger in the test station than in on-farm data with estimates of 28.35 ± 14.55 kg and 9.02 ± 0.67 kg, respectively. Therefore, the most likely reason for the large differences in estimates was sampling. Heritability estimates ranged from 0.37 to 0.60 at 210 and 75 d, respectively, for test station BW and from 0.42 to 0.60 at 210 d and 175 d, respectively, for on-farm BW. Genetic correlation decreased when the age interval between records increased, and were greater between ages for test station than for on-farm data. Genetic correlations between test station and on-farm BW at the same age were high: 0.90 at 175 d and 0.85 at 210 d. For the 56 boars tested in the station, the average reliability of their EBV for ADG between 100 and 210 d was improved from 0.60 using only test station data to 0.69 using jointly test station and on-farm data. Based on these results, the new model developed was considered as a good method of detection of differences in growth potential of Piétrain boars based on test station and on-farm data. [less ▲]

Detailed reference viewed: 51 (27 ULg)
Full Text
See detailcapitulo 10 : Fundamentos de Física en la Ingeniería Civil: Aprendizaje Basado en Problemas (PBL)
Bueno, M.; Paje, S.E.; Luong, Jeanne ULg

in Najera, A.; Arribas, E. (Eds.) mas experiencias de innovación docente en la enseñanza de la física universitaria (2011)

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailQuelques adverbes négatifs en grec ancien sous l'angle du cycle de Jespersen
Denizot, Camille ULg

in Lalies (2011), 31

This article deals with the negative adverbs in Ancient Greek which can take two forms (οὔποτε / οὐδέποτε, οὔπω / οὐδέπω, οὐπώποτε / οὐδεπώποτε). For this purpose, it adopts a diachronic point of view ... [more ▼]

This article deals with the negative adverbs in Ancient Greek which can take two forms (οὔποτε / οὐδέποτε, οὔπω / οὐδέπω, οὐπώποτε / οὐδεπώποτε). For this purpose, it adopts a diachronic point of view (from Homeric poems to IInd A.D.). The adverbs with –δε‐ first appeared as coordinators, and were then employed as reinforced and emphatic forms, and hardly ever as focal forms. These emphatic adverbs finally overtook the corresponding forms without –δε‐, and lost their emphatic characteristics, according to the evolution put forward by Jespersen. When authors from the IInd century A.D. follow the classical pattern, their imitation is shaped by this evolution. [less ▲]

Detailed reference viewed: 13 (1 ULg)