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Peer Reviewed
See detailPhilosophy for controlling auto-ignition in an HCCI engine
Machrafi, Hatim ULg

in Machrafi, Hatim (Ed.) Green Energy and Technology (2012)

Detailed reference viewed: 16 (0 ULg)
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See detailPhilosophy of economic security of organization: The constructivist approach
Shutyak, Yuliya ULg

Conference (2014, June)

The purpose of this paper is to present the concept of economic security of the organization. Guiding by the constructivism approach, the author conducts a narrative literature review on economic security ... [more ▼]

The purpose of this paper is to present the concept of economic security of the organization. Guiding by the constructivism approach, the author conducts a narrative literature review on economic security of organization in parallel with well-known theories of business management.The presented in the paper ideas are an impulse for a new wave in organizational research basing on a new globalizing theoretical framework. The proposed approach to organizational management through the prism of security allows connecting disjoined concepts used in organizational studies and highlights aspects important for organizational survival and growth but mostly overlooked by scientists. The paper’s value consists in evolving of a relatively unexploited concept of economic security of the organization. [less ▲]

Detailed reference viewed: 16 (1 ULg)
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See detailPHITS simulations of the Matroshka experiment
Gustafsson, K.; Sihver, L.; Mancusi, Davide ULg et al

in Advances in Space Research (2010), 40(10), 1266-1272

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See detailPhloem import and storage metabolism are highly coordinated by the low oxygen concentrations within developing wheat seeds.
van Dongen, Joost T; Roeb, Gerhard W; Dautzenberg, Marco et al

in Plant Physiology (2004), 135(3), 1809-21

We studied the influence of the internal oxygen concentration in seeds of wheat (Triticum aestivum) on storage metabolism and its relation to phloem import of nutrients. Wheat seeds that were developing ... [more ▼]

We studied the influence of the internal oxygen concentration in seeds of wheat (Triticum aestivum) on storage metabolism and its relation to phloem import of nutrients. Wheat seeds that were developing at ambient oxygen (21%) were found to be hypoxic (2.1%). Altering the oxygen supply by decreasing or increasing the external oxygen concentration induced parallel changes in the internal oxygen tension. However, the decrease in internal concentration was proportionally less than the reduction in external oxygen. This indicates that decreasing the oxygen supply induces short-term adaptive responses to reduce oxygen consumption of the seeds. When external oxygen was decreased to 8%, internal oxygen decreased to approximately 0.5% leading to a decrease in energy production via respiration. Conversely, increasing the external oxygen concentration above ambient levels increased the oxygen content as well as the energy status of the seeds, indicating that under normal conditions the oxygen supply is strongly limiting for energy metabolism in developing wheat seeds. The intermediate metabolites of seed storage metabolism were not substantially affected when oxygen was either increased or decreased. However, at subambient external oxygen concentrations (8%) the metabolic flux of carbon into starch and protein, measured by injecting (14)C-Suc into the seeds, was reduced by 17% and 32%, respectively, whereas no significant effect was observed at superambient (40%) oxygen. The observed decrease in biosynthetic fluxes to storage compounds is suggested to be part of an adaptive response to reduce energy consumption preventing excessive oxygen consumption when oxygen supply is limited. Phloem transport toward ears exposed to low (8%) oxygen was significantly reduced within 1 h, whereas exposing ears to elevated oxygen (40%) had no significant effect. This contrasts with the situation where the distribution of assimilates has been modified by removing the lower source leaves from the plant, resulting in less assimilates transported to the ear in favor of transport to the lower parts of the plant. Under these conditions, with two strongly competing sinks, elevated oxygen (40%) did lead to a strong increase in phloem transport to the ear. The results show that sink metabolism is affected by the prevailing low oxygen concentrations in developing wheat seeds, determining the import rate of assimilates via the phloem. [less ▲]

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See detailLes phobies des aliments d'origine animale sont-elles toujours fondées ?
Marcq, Christopher ULg

Conference given outside the academic context (2012)

Quand les productions animales deviennent positives pour la santé humaine… Vache folle, dioxine, toxi-infections alimentaires, maladies cardiovasculaires… Le secteur de l'élevage est depuis plusieurs ... [more ▼]

Quand les productions animales deviennent positives pour la santé humaine… Vache folle, dioxine, toxi-infections alimentaires, maladies cardiovasculaires… Le secteur de l'élevage est depuis plusieurs années décrié et victime d’une forme de phobie. Mais ces craintes véhiculées par les produits issus de l’élevage sont-elles toujours fondées ? Comment la recherche peut-elle œuvrer pour rendre les produits animaux plus sûrs sur le plan sanitaire ? Nous verrons comment l’œuf de poule, régulièrement associé aux toxi-infections alimentaires, pourrait bien devenir dans le futur un alicament, sérieux allié pour lutter contre les infections animales et humaines. [less ▲]

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See detailPhonetics
Leroy, Céline ULg; Tunca, Daria ULg

Learning material (2009)

Detailed reference viewed: 54 (5 ULg)
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See detailPhonological deficits in French speaking children with SLI
Maillart, Christelle ULg; Parisse, Christophe

in International Journal of Language & Communication Disorders (2006), 41(3), 253274

Background: This study investigated the phonological disorders of Frenchspeaking children with specific language impairment (SLI) in production. Aims: The main goal was to confirm whether children with ... [more ▼]

Background: This study investigated the phonological disorders of Frenchspeaking children with specific language impairment (SLI) in production. Aims: The main goal was to confirm whether children with SLI have limitations in phonological ability as compared with normally developing children matched by mean length of utterance (MLU) and phonemic inventory size. A number of researchers have obtained findings pointing in this direction, but the conclusions have never been tested on French-speaking children. The second goal was to find out whether characteristic features of the French language are reflected in the nature of the children’s phonological disorder. Methods & Procedures: The spontaneous language of 16 children with SLI and 16 control children matched on MLU and phonemic inventory size (normal language development group) were analysed using different measures bearing on utterances, words, syllables and phonemes. In both SLI and NLD groups, the children were distributed into two different subgroups based on their MLU, with controlled phonemic inventory size. Outcomes & Results: The results supported a specific limitation in the phonological abilities of French children with SLI, as has already been demonstrated for English, Hebrew, Italian and Spanish-Catalan. However, two unexpected results were also obtained. First, a significant difference between children with SLI and control children could only be found for older children (MLU.3), not for younger children with MLU,3. This was true for all measures. Conclusions: This finding highlights the importance of having a developmental perspective and needs to be confirmed through a longitudinal study. Second, deficits were much more significant at the phoneme level than at the syllable level. This may be explained by the fact that the pronunciation of syllables in French is very homogenous, making them easier to segment. [less ▲]

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See detailPhonological impairment as a decay-based impairment : New evidence from a single case study
Martinez Perez, Trecy ULg; Poncelet, Martine ULg; Boniver, Celine ULg et al

Poster (2009, October 19)

Computational models of language processing such as the Martin and Saffran (1992) model assume two properties underlying language processing: decay rate of activated representations and strength of ... [more ▼]

Computational models of language processing such as the Martin and Saffran (1992) model assume two properties underlying language processing: decay rate of activated representations and strength of activation spread between phonological, lexical and semantic levels of representation. Despite the theoretical and epistemological advantages of these models, as opposed to box-and-arrow type models, empirical evidence for these models is currently based on a very limited number of case studies (e.g., patient NC, Martin & Saffran, 1992; patient CO, Majerus et al., 2001). We present here a new single case study providing further support for the existence of decay rate impairments as an underlying cause of language impairment. [less ▲]

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See detailPhonological loop and central executive functioning in Alzheimer's disease
Collette, Fabienne ULg; Van der Linden, Martial ULg; Bechet, Sophie ULg et al

in Neuropsychologia (1999), 37(8), 905-918

The phonological loop and central executive functioning were examined in patients with Alzheimer's disease (AD) and in normal elderly subjects. AD patients showed abnormal functioning of the phonological ... [more ▼]

The phonological loop and central executive functioning were examined in patients with Alzheimer's disease (AD) and in normal elderly subjects. AD patients showed abnormal functioning of the phonological loop and decreased performance on tasks assessing the central executive. However, when AD patients were separated into two groups on the basis of their span level, both groups showed deficits of the central executive but only patients with the lower span level presented a dysfunction of the phonological loop as well as impaired performance in tasks of phonological discrimination, articulation rate and speed of processing. These results are interpreted in terms of progression of the disease, with high-span level patients being less severely demented and displaying deficits only in higher-level cognitive functions (such as manipulation of information stored in working memory) whereas patients with a low span level have impairments encompassing a series of more basic processes. [less ▲]

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See detailPhonological processing in Williams syndrome
Majerus, Steve ULg

in Bartke, Susanne (Ed.) Williams syndrome across language (2004)

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See detailPhonological representations in children with SLI : a study of French vowels.
Maillart, Christelle ULg; Cazeneuve, Julia; MacLeod, Andrea

Poster (2011, July)

Detailed reference viewed: 58 (4 ULg)
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See detailPhonological representations of children with SLI : a study of French.
Maillart, Christelle ULg; Schelstraete, Marie-Anne; Hupet, Michel

in Journal of Speech, Language, and Hearing research (2004), 47

The present research examined the quality of the phonological representations of French children with specific language impairment (SLI) and those with normal language development (NLD). Twenty-five ... [more ▼]

The present research examined the quality of the phonological representations of French children with specific language impairment (SLI) and those with normal language development (NLD). Twenty-five children with SLI and fifty normally developing children matched on lexical age level participated in an auditory lexical decision task. The observations gathered in our study can be summarized as follows. First, children with a higher receptive lexical level performed better, and this was true both for children with NLD and children with SLI. Second, both children with NLD and SLI were more likely to reject pseudo-words resulting from a modification affecting the number of syllables of a word than pseudo-words resulting from a slight modification with the number of syllables unchanged. This difference, however, was greater for the children with SLI who appeared to have much difficulty rejecting pseudo-words resulting from slight modifications. Finally, the performance of children with SLI was particularly poor when presented with pseudowords resulting from a slight modification at the beginning or the end of a word. These findings are interpreted as supporting the hypothesis of an underspecification of phonological representations in children with SLI. [less ▲]

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See detailPhonological short-term memory networks following recovery from Landau and Kleffner syndrome
Majerus, Steve ULg; Laureys, Steven ULg; Collette, Fabienne ULg et al

in Human Brain Mapping (2003), 19(3), 133-144

Landau-Kleffner syndrome (LKS) is a rare acquired aphasia occurring in otherwise healthy children, together with spike-wave discharges predominating over superior temporal regions and activated by sleep ... [more ▼]

Landau-Kleffner syndrome (LKS) is a rare acquired aphasia occurring in otherwise healthy children, together with spike-wave discharges predominating over superior temporal regions and activated by sleep. Although the outcome of language abilities is variable, a residual impairment in verbal short-term memory (STM) is frequent. This STM deficit might be related to the persistent dysfunction of those temporal lobe regions where epileptic discharges were observed during the active phase of the disorder. We tested this hypothesis by measuring brain activation during immediate serial recall of lists of 4 words, compared to single word repetition, using H(2) (15)O positron emission tomography (PET), in 3 LKS patients after recovery and in 14 healthy controls. The patients (TG, JPH, and DC) had shown abnormally increased or decreased glucose metabolism in left or right superior temporal gyrus (STG) at different stages during the active phase of their disease. At the time of this study, the patients were 6-10 years from the active phase of LKS. Results showed that Patients JPH and DC had impaired performance in the STM condition, whereas TG showed near normal performance. PET data showed that JPH and DC activated significantly less than controls left and right posterior STG. TG, having near normal STM performance, showed increased activity in the posterior part of the right STG. These data suggest that impaired verbal STM at late outcome of LKS might indeed be related to a persistent decrease of activity in those posterior superior temporal gyri that were involved in the epileptic focus during the active phase. [less ▲]

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See detailLa phonologie et la mémoire en classe de français langue seconde
Lucchini, Silvia ULg

Conference given outside the academic context (2003)

Detailed reference viewed: 2 (0 ULg)
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See detailPhonologie, lexique et métaphonologie dans le syndrome de l'X-fragile et le syndrome de Down
Pierart, Bernadette; Comblain, Annick ULg

Conference (1998, May 28)

La présentation passe en revue les résultats d'enfants trisomiques 21 et x-fragile aux épreuves proposée dans la nouvelle batterie d'évaluation du langage ISADYLE. La recherche sur ISADYLE poursuit 4 ... [more ▼]

La présentation passe en revue les résultats d'enfants trisomiques 21 et x-fragile aux épreuves proposée dans la nouvelle batterie d'évaluation du langage ISADYLE. La recherche sur ISADYLE poursuit 4 objectifs : - (a) construire une batterie longue de langage oral, destinée à l' examen approfondi des dysfonctionnements du langage de l'enfant ; - (b) construire une batterie courte de langage oral, à partir des items statistiquement les plus discriminants ; - (c) réaliser des étalonnages corrects sur échantillons proportionnels stratifiés en Belgique francophone, ce qui répond également aux besoins de la sécurité sociale en matière de logopédie de l'enfant; - (d) constituer une banque de données longitudianles et transversales sur le lanngage oral de 1200 enfants de 3 à 12 ans [less ▲]

Detailed reference viewed: 148 (2 ULg)