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See detailLe Mur et le masque. À propos de Banksy.
Saint-Amand, Denis ULg

in MethIS : Méthodes et Interdisciplinarité en Sciences Humaines (in press)

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See detailDepths and type of substrate influence the ability of Nasonia vitripennis Walker (Hymenoptera: Pteromalidae) to encounter host
Frederickx, Christine ULg; Dekeirsschieter, Jessica ULg; Verheggen, François ULg et al

in Journal of Insect Science [=JIS] (in press)

The foraging behaviour of a parasitoid insect species includes the host’s habitat and subsequent location of the host. Habitats-substrate, substrate moisture and light levels can affect the host location ... [more ▼]

The foraging behaviour of a parasitoid insect species includes the host’s habitat and subsequent location of the host. Habitats-substrate, substrate moisture and light levels can affect the host location made by different species of parasitoids. However, the depth at which parasitoids concentrate their search effort is an another important ecological characteristic and play an important role on the host location. Here, we have investigated the ability of a pupal parasitoid, Nasonia vitripennis Walker, to penetrate and kill fly pupae located at different depth of the substrate. Three different types of substrate were tested: loam soil, compost and vermiculite substrate. In both loam soil and compost, all of the parasitism activity was restricted to pupae placed directly on the surface. Parasitism activity in vermiculite showed that the average number of pupae parasitized was decreased with depth. These results suggest that fly pupae situated deeper in the substrate are less subjected to parasitism by N. vitripennis. [less ▲]

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See detailArrêts sur images – usages et pratiques du photogramme
Thonon, Jonathan ULg

in MethIS : Méthodes et Interdisciplinarité en Sciences Humaines (in press)

Le photogramme est, au cinéma, la plus petite unité de prise de vue. Image fixe, unité élémentaire du film, le photogramme forme la cellule figée d’un mouvement qui se reconstitue sous l’effet d’un ... [more ▼]

Le photogramme est, au cinéma, la plus petite unité de prise de vue. Image fixe, unité élémentaire du film, le photogramme forme la cellule figée d’un mouvement qui se reconstitue sous l’effet d’un défilement réglé (24 photogrammes/seconde) par le dispositif technique du cinéma. Image paradoxale en ce qu’elle reste invisible au spectateur malgré sa force iconique, le photogramme trouve cependant, dans le flux qui le conduit insensiblement à la disparition, certaines zones de visibilité qui en révèlent le caractère à la fois fragile et intensif. Nous allons donc envisager certaines pratiques ou certains usages du photogramme cinématographique, tout en essayant de dégager, au départ de ces pratiques, les éléments d’une théorie du photogramme, que Roland Barthes et Sylvie Pierre appelaient déjà de leurs vœux. Des protos-photogrammes et de leur usage scientifique chez Muybridge et Marey, aux usages artistiques contemporains, en passant par des pratiques publicitaires, promotionnelles ou analytiques, nous allons voir que le photogramme reste un objet singulier. [less ▲]

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See detailArsinoe II come dea attraverso le sue epiclesi cultuali
Caneva, Stefano ULg

in Athenaeum : Studii Periodici di Letteratura e Storia (in press)

Dopo una introduzione storica e storiografica sul significato dei culti regali ellenistici, l’intervento esamina alcuni dei nomi divini attribuiti ad Arsinoe II nelle fonti letterarie e documentarie, con ... [more ▼]

Dopo una introduzione storica e storiografica sul significato dei culti regali ellenistici, l’intervento esamina alcuni dei nomi divini attribuiti ad Arsinoe II nelle fonti letterarie e documentarie, con l’eccezione dell’epiclesi esclusiva Philadelphos. Scopo della ricerca è 1) una valutazione delle strategie di inserimento della nuova dea nel pantheon tradizionale; 2) una riflessione sull’autoconsapevolezza degli antichi in relazione alla propria tradizione religiosa, per come essa si manifesta attraverso l’oculata manipolazione di un elemento essenziale nella definizione della divinità, qual è il nome divino. Un’Appendice elenca, in tre tabelle, tutte le denominazioni greche di Arsinoe II (esclusa Philadelphos), fornendo indicazioni sulla fonte, la sua collocazione spaziale e temporale e sulla divinità tradizionale di riferimento. [less ▲]

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See detailConsommation de produits d'origine animale dans la concession forestière 039/11 de la SODEFOR à Oshwe (R.D. Congo)
Semeki Ngabinzeke, Jean; Belani Masamba, Justin; Ntoto M'Vubu et al

in Tropicultura (in press)

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See detailThe evaluation of vocal accuracy: The case of operatic singing voices
Larrouy, Pauline ULg; Magis, David ULg; Morsomme, Dominique ULg

in Music Perception (in press)

The objective analysis of Western operatic singing voices indicates that professional singers can be particularly “out of tune”. This study aims to better understand the evaluation of operatic voices ... [more ▼]

The objective analysis of Western operatic singing voices indicates that professional singers can be particularly “out of tune”. This study aims to better understand the evaluation of operatic voices, which have particularly complex acoustical signals. Twenty-two music experts were asked to evaluate the vocal pitch accuracy of 14 sung performances with a pairwise comparison paradigm, in a test and a retest. In addition to the objective measurement of pitch accuracy (pitch interval deviation), several performance parameters (average tempo, fundamental frequency of the starting note) and quality parameters (energy distribution, vibrato rate and extent) were observed and compared to the judges’ perceptual rating. The results show high intra- and inter-judge reliability when rating the pitch accuracy of operatic singing voices. Surprisingly, all the parameters were significantly related to the ratings and explain 78.8% of the variability of the judges’ rating. The pitch accuracy evaluation of operatic voices is thus not based exclusively on the precision of performed music intervals but on a complex combination of performance and quality parameters. [less ▲]

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See detailDo lignin wastes arising from cellulosic ethanol biorefinery act as radical scavenging agents?
Vanderghem, Caroline ULg; Jacquet, Nicolas ULg; Richel, Aurore ULg

in Australian Journal of Chemistry (in press)

Lignin is a co-product from the biorefinery and paper industry. Its non-energetic valorization remains a field of extensive R&D developments. In this perspective, this study is undertaken to evaluate the ... [more ▼]

Lignin is a co-product from the biorefinery and paper industry. Its non-energetic valorization remains a field of extensive R&D developments. In this perspective, this study is undertaken to evaluate the radical scavenging ability of some herbaceous lignins. These lignins, extracted from Miscanthus (Miscanthus x giganteus) or Switchgrass (Panicum Virgatum L.), are selected as benchmarks for this study as a function of their chemical structure and average molecular weight. These technical lignins, side-products in the bioethanol production process, are found to display a moderate antioxidant activity as evaluated by the DPPH (1,1-diphenyl-2-picrylhydrazil) free radical scavenging test system. A correlation between the radical scavenging properties and the molecular features is proposed and discussed. Infrared spectroscopy is evaluated as a straightforward qualitative prediction tool for the radical scavenging capacity. [less ▲]

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See detailMechanism of the medium-duration afterhyperpolarization in rat serotonergic neurons
Alix, Philippe ULg; Venkatesan, Kumar; Scuvée-Moreau, Jacqueline et al

in European Journal of Neuroscience (in press), 39(2), 186-196

Most serotonergic neurons display a prominent medium-duration afterhyperpolarization (mAHP), which is mediated by small conductance Ca2+-activated K+ (SK) channels. Recent ex vivo and in vivo experiments ... [more ▼]

Most serotonergic neurons display a prominent medium-duration afterhyperpolarization (mAHP), which is mediated by small conductance Ca2+-activated K+ (SK) channels. Recent ex vivo and in vivo experiments have suggested that SK channel blockade increases the firing rate and/or bursting in these neurons. The purpose of this study was therefore to characterize the source of Ca2+ which activates the mAHP channels in serotonergic neurons. In voltage clamp experiments, an outward current was recorded at -60 mV after a depolarizing pulse to + 100 mV. A supra-maximal concentration of the SK channel blockers apamin or (-)- bicuculline methiodide blocked this outward current. This current was also sensitive to the broad Ca2+ channel blocker Co2+ and was partially blocked by both ω-conotoxin and mibefradil, which are blockers of N-type and T-type Ca2+ channels, respectively. Neither blockers of other voltage-gated Ca2+ channels nor DBHQ, an inhibitor of Ca2+-induced Ca2+ release, had any effect on the SK current. [less ▲]

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See detailOn the pragmatics of subjectification. The emergence and grammaticalization of a verb-less Allative Future in Ancient Egyptian
Grossman, Eitan; Polis, Stéphane ULg

in Acta Linguistica Hafniensia : International Journal of Linguistics (in press)

In this paper, we argue that an expanded conception of the distinction between speaker-oriented and subject-oriented inferences is crucial for understanding the motivations and mechanisms of semantic ... [more ▼]

In this paper, we argue that an expanded conception of the distinction between speaker-oriented and subject-oriented inferences is crucial for understanding the motivations and mechanisms of semantic change in grammaticalization and subjectivation, on the one hand, and for clarifying the links between semantic change and reductive formal changes. Speaker-oriented inferences have significant consequences, leading to the relaxation of selectional restrictions on a construction. In turn, the relaxation of selectional restrictions can create conditions in which the type- and token-frequency of a construction can rise considerably. Furthermore, changes in the selectional restrictions on a construction can themselves catalyze semantic change by coercing listeners into new form-function pairings. This framework is applied to the grammaticalization of allative futures, a typological comparative concept developed in order to compare structurally diverse future tenses. A small typological study allows us to reconsider some problematic pathways of grammaticalization and to suggest some alternative analyses. Following the typological discussion, a detailed diachronic case study of a verbless allative future in Ancient Egyptian is presented. [less ▲]

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See detailOn the asymptotic standard error of a class of robust estimators of ability in dichotomous item response models
Magis, David ULg

in British Journal of Mathematical & Statistical Psychology (in press)

In item response theory, the classical estimators of ability are highly sensitive to response disturbances and can return strongly biased estimates of the true underlying ability level. Robust methods ... [more ▼]

In item response theory, the classical estimators of ability are highly sensitive to response disturbances and can return strongly biased estimates of the true underlying ability level. Robust methods were introduced to lessen the impact of such aberrant responses onto the estimation process. The computation of asymptotic (i.e., large sample) standard errors (ASE) for these robust estimators, however, has not been fully considered yet. This paper focuses on a broad class of robust ability estimators, defined by an appropriate selection of the weight function and the residual measure, for which the ASE is derived from the theory of estimating equations. The maximum likelihood (ML) and the robust estimators, together with their estimated ASE, are then compared through a simulation study. It is concluded that both the estimators and their ASE perform similarly in absence of response disturbances, while the robust estimator and its estimated ASE are less biased and outperform their ML counterparts in presence of response disturbances with large impact on the item response process. [less ▲]

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See detailOptimizing Perfectly Matched Layers in Discrete Contexts
Modave, Axel ULg; Delhez, Eric ULg; Geuzaine, Christophe ULg

in International Journal for Numerical Methods in Engineering (in press)

Perfectly Matched Layers (PMLs) are widely used for the numerical simulation of wave-like problems defined on large or infinite spatial domains. However, for both the time-dependent and the time-harmonic ... [more ▼]

Perfectly Matched Layers (PMLs) are widely used for the numerical simulation of wave-like problems defined on large or infinite spatial domains. However, for both the time-dependent and the time-harmonic cases, their performance critically depends on the so-called absorption function. This paper deals with the choice of this function when classical numerical methods are used (based on finite differences, finite volumes, continuous finite elements and discontinuous finite elements). After reviewing the properties of the PMLs at the continuous level, we analyse how they are altered by the different spatial discretizations. In the light of these results, different shapes of absorption function are optimized and compared by means of both one- and two-dimensional representative time-dependent cases. This study highlights the advantages of the so-called shifted hyperbolic function, which is efficient in all cases and does not require the tuning of a free parameter, by contrast with the widely used polynomial functions. [less ▲]

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See detailEvaluation of the impact of 6-month training by whole body vibration on the risk of falls among nursing home residents, observed over a 12-month period: a single blind, randomized controlled trial.
Buckinx, Fanny ULg; Beaudart, Charlotte ULg; Maquet, Didier ULg et al

in Aging clinical and experimental research (in press)

BACKGROUND: We have previously shown that short sessions of whole body vibration (WBV) were not able to significantly improve fall risk among nursing home residents but some trends towards an improvement ... [more ▼]

BACKGROUND: We have previously shown that short sessions of whole body vibration (WBV) were not able to significantly improve fall risk among nursing home residents but some trends towards an improvement of motor capacity were observed. OBJECTIVE: The objective of the present study was to evaluate the impact of 6-month training by WBV on functional and motor abilities among nursing home residents observed over a 12-month period. METHODS: Patients were randomized into two groups: the WBV group which received three training sessions every week composed of five series of 15 s of vibration at 30 Hz intensity for a period of 6 months and a control group with normal daily life. The impact of this training on the risk of falls was assessed blindly after 6 and 12 months by the Tinetti Test, the "Timed Up and Go" test and a quantitative evaluation of a 10-s walk performed with a tri-axial accelerometer. The occurrence of falls was also observed. RESULTS: 62 elderly healthy volunteers, (47 women and 15 men, mean age 83.2 +/- 7.9 years) were included in this study. There was no significant difference between the two groups regarding the Tinetti test (p = 0.75), the "Timed Up and Go" test (p = 0.19) and the Locometrix(R) test, except for the step length, measured by dual task (p < 0.01). No significant inter-group difference in the frequency of falls was observed during the 12 months of research. A total of 42 falls were recorded during the first 6 months of experimentation: 24 falls in the treated group and 18 in the control group (p = 0.60). During the next 6 months, 19 falls occurred: 8 falls in the treated group and 11 in the control group (p = 0.52). CONCLUSION: This study failed to establish the effectiveness of low doses of WBV, under the conditions used in our study, on functional and motor abilities of institutionalized elderly patients. However, given the positive results of other studies, further investigations, with modified therapeutic protocols, seem necessary to clarify the effects of WBV in the elderly. [less ▲]

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See detailThe effect of melody and technique on the singing voice accuracy of trained singers
Larrouy, Pauline ULg; Magis, David ULg; Morsomme, Dominique ULg

in Logopedics, Phoniatrics, Vocology (in press)

A previous study highlighted the effect of vocal technique on the singing voice accuracy of trained singers (1). The intervals' precision between the notes of the tune was altered when the singers used ... [more ▼]

A previous study highlighted the effect of vocal technique on the singing voice accuracy of trained singers (1). The intervals' precision between the notes of the tune was altered when the singers used Western operatic singing technique. In order to better understand these results, we have recorded two different melodies sung with two different vocal techniques. A large panel of trained singers (N = 50) participated in the study. The analytical method described in the reference paper (1) has been applied. The results confirm the effect of vocal technique on the vocal accuracy of trained singers. In addition, these results provide an answer about the melodic effect and guide future work on the perception process of operatic voices. [less ▲]

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See detailLa maladie de Lyme entre cadrage infectieux, vectoriel et zoonotique : vers une écologisation des problèmes sanitaires
Massart, Clémence

in VertigO : la Revue Electronique en Sciences de l'Environnement (in press)

This paper is devoted to the qualification of Lyme disease in France. Firt vectorial disease in the northern hemisphere, Lyme diseas is transmitted by a genus of tick called Ixodes (in Europe by Ixodes ... [more ▼]

This paper is devoted to the qualification of Lyme disease in France. Firt vectorial disease in the northern hemisphere, Lyme diseas is transmitted by a genus of tick called Ixodes (in Europe by Ixodes ricinus ; in Asia by Ixodes persulcatus ; in United States and in Canada by Ixodes scapularis). Concerned only with human health and limited to Lyme, a first framing has grown around physicians and patients which are involved in a controversy. Progressively, a second framing has emerged, called vectorial and structured around ecologists, normally not involved in human health. Based on the vector, this framing includes other diseases transmitted by Ixodes ricinus which, during the last 30 years, have been discovered : Tick-Borne Encephalitis, Babesia divergens, Bartonella infection, Tularemia, etc. Linked to these new pathologies, the media coverage of Lyme has finally opened the « vectorial transmission category » – usually associated to mosquitoes and south countries – to ticks and diseases from the north. A third framing dedicated to animal reservoir and called zoonotic is emerging at last. We can see in that framing overlapping a kind of “ecologization” of sanitary issues. [less ▲]

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See detailAn Easy, Convenient Cell and Tissue Extraction Protocol for Nuclear Magnetic Resonance Metabolomics.
Matheus, Nicolas ULg; Hansen, Sylvain ULg; Rozet, Eric ULg et al

in Phytochemical analysis : PCA (in press)

INTRODUCTION: As a complement to the classic metabolomics biofluid studies, the visualisation of the metabolites contained in cells or tissues could be a very powerful tool to understand how the local ... [more ▼]

INTRODUCTION: As a complement to the classic metabolomics biofluid studies, the visualisation of the metabolites contained in cells or tissues could be a very powerful tool to understand how the local metabolism and biochemical pathways could be affected by external or internal stimuli or pathologies. Therefore, extraction and/or lysis is necessary to obtain samples adapted for use with the current analytical tools (liquid NMR and MS). These extraction or lysis work-ups are often the most labour-intensive and rate-limiting steps in metabolomics, as they require accuracy and repeatability as well as robustness. Many of the procedures described in the literature appear to be very time-consuming and not easily amenable to automation. OBJECTIVE: To find a fast, simplified procedure that allows release of the metabolites from cells and tissues in a way that is compatible with NMR analysis. METHODS: We assessed the use of sonication to disrupt cell membranes or tissue structures. Both a vibrating probe and an automated bath sonicator were explored. RESULTS: The application of sonication as the disruption procedure led to reproducible NMR spectral data compatible with metabolomics studies. This method requires only a small biological tissue or cell sample, and a rapid, reduced work-up was applied before analysis. The spectral patterns obtained are comparable with previous, well-described extraction protocols. CONCLUSION: The rapidity and the simplicity of this approach could represent a suitable alternative to the other protocols. Additionally, this approach could be favourable for high- throughput applications in intracellular and intratissular metabolite measurements. Copyright (c) 2014 John Wiley & Sons, Ltd. [less ▲]

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See detailComparison of vocal loading parameters in kindergarten and elementary school teachers
Remacle, Angélique ULg; Morsomme, Dominique ULg; FINCK, Camille ULg

in Journal of Speech, Language, and Hearing research (in press)

Purpose: Although a global picture exists of teachers’ voice demands in general, few studies have compared specific groups of teachers to determine whether some are more at risk than others. This study ... [more ▼]

Purpose: Although a global picture exists of teachers’ voice demands in general, few studies have compared specific groups of teachers to determine whether some are more at risk than others. This study compared vocal loading of kindergarten and elementary school teachers; professional and non-professional vocal load was determined for both groups. Method: Twelve kindergarten and twenty elementary school female teachers without voice problems were monitored during one workweek using the Ambulatory Phonation Monitor. Vocal loading parameters analyzed were F0, SPL, time dose, distance dose and cycle dose. Results: Comparisons between the groups showed significantly higher cycle dose and distance dose for kindergarten teachers than for elementary school teachers, in both professional and non-professional environments. Professional and non-professional voice use comparisons showed significant differences for all parameters, indicating that vocal load was higher in the professional environment for both groups. Conclusions: The higher vocal doses measured in kindergarten teachers suggest that particular attention should be paid to this specific group of teachers. Although non-professional vocal load is lower than professional vocal load, it is important to take both into account because of their cumulative effects. [less ▲]

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See detailPostures d’apprenants et images sociotypées du professeur de français langue étrangère dans le contexte de la mobilité Erasmus
Meunier, Deborah ULg

in Langage et l'Homme (Le) : Recherches Pluridisciplinaires sur le Langage (in press)

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See detailMultiscale variability of amphipod assemblages in Posidonia oceanica meadows
Sturaro, Nicolas ULg; Lepoint, Gilles ULg; Vermeulen, Simon et al

in Journal of Sea Research (in press)

The study of spatial patterns is of ecological importance in order to understand the causes of the distribution and abundance of organisms, and it also provides valuable basis for management and ... [more ▼]

The study of spatial patterns is of ecological importance in order to understand the causes of the distribution and abundance of organisms, and it also provides valuable basis for management and conservation. Amphipod crustaceans are key organisms in seagrass ecosystems. However, little attention has been paid to the spatial scales at which amphipod assemblages may vary. We examined variability patterns of amphipod populations inhabiting Posidonia oceanica meadows, over spatial scales spanning four orders of magnitude (1 to 1000 metres) and for two consecutive years. This study reports the scales that contributed most to spatial variation of amphipod assemblages and explores the potential processes of the observed patterns, with particular emphasis on habitat features. The number of species, the diversity and the density of some species, exhibited high variation across years. Most species showed the highest spatial variation in density and biomass at small scales (~1 and 10 m). Based on density data, the structure of amphipod assemblages did not differ at any scales investigated. The patchiness that occurred at small scales may have been only weakly related to habitat features. Instead, we postulated that behavioural processes of amphipods were likely good explanatory factors. Although, the small scale spatial variability can be an important feature of amphipod assemblages in P. oceanica meadows, many patterns probably remained undetected as they may occur at scales smaller than those investigated. [less ▲]

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See detailRemote sensing of colour, temperature and salinity – new challenges and opportunities
Alvera Azcarate, Aïda ULg; Ruddick, Kevin; Minnett, Peter

in Remote Sensing of Environment (in press)

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See detailVitamin D status of schoolchildren in Northern Algeria, seasonal variations and determinants of vitamin D deficiency
Djennane, M; Lebbah, S; Roux, C et al

in Osteoporosis International (in press)

Summary There are no published data on the vitamin D status of children living in North Africa. In 435 healthy Algerian children 5–15 years old, we found that vitamin D insufficiency (serum 25 ... [more ▼]

Summary There are no published data on the vitamin D status of children living in North Africa. In 435 healthy Algerian children 5–15 years old, we found that vitamin D insufficiency (serum 25-hydroxyvitamin D (25OHD) <50 nmol/L) was frequent, especially in winter. Low vitamin D status was associated with increased parathyroid hormone (PTH) and leg deformation Introduction As there are no published data on the vitamin D status of children living in North Africa, we evaluated the 25OHD concentration of healthy Algerian children at the end of summer and at the end of winter. As secondary objectives, we studied the various determinants of vitamin D status and the PTH-25OHD relationship in these subjects. Methods Four hundred thirty-five children 5–15 years old were examined and had a blood sample in September 2010. Of them, 408 were sampled again in March 2011. Results Median 25OHD concentration in the whole group was 71.4 nmol/L in September and 52.9 nmol/L in March. In September, 58.4, 29.9, and 8.1 % had a 25OHD concentration below 75, 50, and 30 nmol/L respectively. In March, these percentages increased to 65.2, 41.4, and 17.4 % for the 75, 50, and 30 nmol/L threshold, respectively. In multivariate analysis, older age, darker skin phototype, low daily vitamin D and calcium intake, poor socioeconomic status, and short daily sun exposure remained significantly associated with a 25OHD <50 nmol/L at both visits. In 72 (16.6 %) children, genu varum/valgum was present. Compared to the 363 children without leg deformation, they presented more frequently with the risk factors of vitamin D insufficiency. They also had lower 25OHD concentrations and higher PTH and tALP. Serum PTH and 25OHD concentrations were negatively and significantly correlated (r=−0.43; p<0.001) without a 25OHD threshold above which PTH does not decrease anymore. Conclusion Despite a sunny environment, vitamin D insufficiency is frequent in healthy Algerian children. [less ▲]

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See detailAn overview of nonintrusive characterization, propagation, and sensitivity analysis of uncertainties in computational mechanics
Arnst, Maarten ULg; Ponthot, Jean-Philippe ULg

in International Journal for Uncertainty Quantification (in press)

In this paper, we offer a short overview of a number of methods that have been reported in the computational-mechanics literature for quantifying uncertainties in engineering applications. Within a ... [more ▼]

In this paper, we offer a short overview of a number of methods that have been reported in the computational-mechanics literature for quantifying uncertainties in engineering applications. Within a probabilistic framework, we describe the characterization of uncertainties using mathematical statistics methods, the propagation of uncertainties through computational models using either Monte Carlo sampling or stochastic expansion methods, and the sensitivity analysis of uncertainties using variance- and differentiation-based methods. We restrict our attention to nonintrusive methods that can be implemented as wrappers around existing computer programs, thus requiring no modification of the source code. We include some recent advances in the propagation and sensitivity analysis of uncertainties that are characterized by arbitrary probability distributions that may exhibit statistical dependence. Finally, we demonstrate the methods integrated in the proposed overview through a nonlinear engineering application relevant to metal forming. [less ▲]

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See detailLe pouvoir par les armes, le pouvoir par les idées
Dumont, Jonathan ULg; Masson, Christophe ULg

in Moyen Age (Le) (in press), 120(3-4),

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See detailEffet du mode de conservation d’huile de Jatropha curcas L. sur son efficacité dans la lutte contre les principaux insectes ravageurs du niébé (Vigna unguiculata (L.) Walp. au Niger
Abdoul Habou, zakari; Toudou, Adam; Haubruge, Eric ULg et al

in Tropicultura (in press)

Jatropha curcas oil has an insecticidal activity harnessed by the farmers in Niger. In this study, we compared the insecticidal activity of two batches of oil conserved during 70 days, one exposed to ... [more ▼]

Jatropha curcas oil has an insecticidal activity harnessed by the farmers in Niger. In this study, we compared the insecticidal activity of two batches of oil conserved during 70 days, one exposed to light and the other kept in the dark. The insecticidal efficacy was evaluated in a field with three concentrations (5, 10 and 15%) trial on the main pests of Cowpea (Vigna unguiculata (L.) Walp) and in a laboratory test on Megalurothrips sjostedti Trybon (Thysanoptera: Thripidae) with different concentrations of crude oil (50; 100; 150 and 200 µl). No difference in insecticidal effect was found between the two modes of oil conservation, both in the laboratory and in the field. In the field, regardless of the mode of conservation, the concentrations of 10% of J. curcas oil enables a reduction of over than 80% of thrips, aphids, and bugs compared to the control. Its increased seeds yield more than 50%. The concentration of 15% gives an insecticidal effect comparable to that of the reference treatment (deltaméthrine) but induces phytotoxicity symptoms on the leaves of Cowpea. [less ▲]

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See detailHost-habitat location by the parasitoid, Nasonia vitripennis Walker (Hymenoptera: Pteromalidae).
Frederickx, Christine ULg; Dekeirsschieter, Jessica ULg; Verheggen, François ULg et al

in Journal of Forensic Sciences (in press)

This study investigated the role of odorant cues used during host-habitat location by the generalist parasitoid, Nasonia vitripennis Walker. N vitripennis is a common parasitoid of Dipteran pupae found in ... [more ▼]

This study investigated the role of odorant cues used during host-habitat location by the generalist parasitoid, Nasonia vitripennis Walker. N vitripennis is a common parasitoid of Dipteran pupae found in association with decaying carrion. Behavioral assays were used to investigate the host-habitat searching behavior under different scenarios. First, we demonstrated N. vitripennis to be significantly attracted toward odorant cues associated with decaying meat. The biological activity of nine of the volatile molecules constituting the odor of decaying meat were tested on the searching behavior of parasitoid females through two complementary chemoecological approaches: electronantennography (EAG) and olfactometry bioassays. Butanoic acid and butan-1-ol elicited high olfactory responses, but no attraction was induced by these two chemicals. Behavioral assays showed that, among the VOCs tested, methyldisulfanylmethane (DMDS) was the only volatile chemical to induce attraction in N. vitripennis. [less ▲]

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See detailEclairer les performances par une analyse après coup pour évaluer des compétences professionnelles
Chenu, Florent ULg

in Revue Française de Pédagogie (in press)

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See detailNGOs and female circumcision in Egypt. An anthropological enquiry.
Mescoli, Elsa ULg

in Journal of the Anthropology of the Contemporary Middle East and Central Eurasia (in press)

In 1994, during the International Conference on Population and Development convened by the United Nations in Cairo, a shocking video was shown, realized by an operator of CNN and depicting the ... [more ▼]

In 1994, during the International Conference on Population and Development convened by the United Nations in Cairo, a shocking video was shown, realized by an operator of CNN and depicting the circumcision of a ten-year-old child living in this very same city. Discourses around female circumcision were not new in Egypt and in the international community, but what was considered as a new episode of a recurrent scandal (not the last one indeed) led to enhance the "war against bad government"[1]. A war fought by means of ideological weapons produced by expert knowledges among which the medical and the feminist ones. The assignment of a value to the state of integrity of the female body and to the women freedom of choice, both designed according to Western canons, led to different actions to “save” Egyptian women. In this context, development agencies fosters a widespread representation of the victim, constituted by the woman mutilated body. Such representation is functional to put in place programs which do not guarantee a freedom of choice, but rather require adherence to another female model, one that defines the "modern" woman. My article, based on ethnographic experience, aims at highlighting the complexity of such dynamics and the role played by humanitarianism within them. Female body becomes the arena where local and international economic powers operate, disregarding a real understanding of the practice, its meanings and its eventual change. ________________________________________ [1] Foucault, Michel. La nascita della clinica. Il ruolo della medicina nella costituzione delle scienze umane, Einaudi, Torino 1969: 48. [less ▲]

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See detailEnjeux autour des forêts congolaises
Vermeulen, Cédric ULg

in Cahiers africains (in press)

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See detailBeAMS: a Beacon based Angle Measurement Sensor for mobile robot positioning
Pierlot, Vincent ULg; Van Droogenbroeck, Marc ULg

in IEEE Transactions on Robotics (in press)

Positioning is a fundamental issue in mobile robot applications, and it can be achieved in multiple ways. Among these methods, triangulation based on angle measurements is widely used, robust, accurate ... [more ▼]

Positioning is a fundamental issue in mobile robot applications, and it can be achieved in multiple ways. Among these methods, triangulation based on angle measurements is widely used, robust, accurate, and flexible. This paper presents BeAMS, a new active beacon-based angle measurement system used for mobile robot positioning. BeAMS introduces several major innovations. One innovation is the use of a unique unsynchronized channel with On-Off Keying modulated infrared signals to measure angles and to identify the beacons. We also introduce a new mechanism to measure angles: our system detects a beacon when it enters and leaves an angular window. We show that the estimator resulting from the center of this angular window provides an unbiased estimate of the beacon angle. A theoretical framework for a thorough performance analysis of BeAMS is provided. We establish the upper bound of the variance and validate this bound through experiments and simulations; the overall error measure of BeAMS is lower than 0.24 deg for an acquisition rate of 10 Hz. In conclusion, BeAMS is a low power, flexible, and robust solution for angle measurement, and a reliable component for robot positioning. [less ▲]

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See detailEffect of post remission therapy prior to reduced intensity conditioning allogeneic transplantation for acute myeloid leukemia in first complete remission
Warlick, Erica; Paulson, Kristjan; Brazauskas, Ruta et al

in Biology of Blood & Marrow Transplantation (in press)

The impact of pre transplant (HCT) cytarabine consolidation therapy on post HCT outcomes has yet to be evaluated after reduced intensity or non-myeloablative conditioning. We analyzed 604 adults with ... [more ▼]

The impact of pre transplant (HCT) cytarabine consolidation therapy on post HCT outcomes has yet to be evaluated after reduced intensity or non-myeloablative conditioning. We analyzed 604 adults with acute myeloid leukemia (AML) in first complete remission (CR1) reported to the CIBMTR who received a RIC or NMA HCT from an HLA-identical sibling, HLA-matched unrelated donor (URD), or umbilical cord blood (UCB) donor in 2000-2010. We compared transplant outcomes based on exposure to cytarabine post remission consolidation. Three year survival rates were 36% (29-43%, 95% CI) in the no consolidation arm and 42% (37-47%, 95% CI) in the cytarabine consolidation arm (p=0.16). Disease free survival was 34% (27-41%, 95% CI) and 41% (35-46%, 95% CI) (p=0.15), respectively. Three year cumulative incidences of relapse were 37% (30-44%, 95% CI) and 38% (33-43%, 95% CI), respectively (p=0.80). Multivariate regression confirmed no effect of consolidation on relapse, DFS and survival. Prior to RIC/NMA HCT, these data suggest pre-HCT consolidation cytarabine does not significantly alter outcomes and support prompt transition to transplant as soon as morphologic CR1 is attained. If HCT is delayed while identifying a donor, our data suggest that consolidation does not increase transplant TRM and is reasonable if required. [less ▲]

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See detailA Super-Jupiter orbiting a late-type star: A refined analysis of microlensing event OGLE-2012-BLG-0406
Tsapras, Y.; Choi, J.-Y.; Street, R. A. et al

in Astrophysical Journal (in press)

We present a detailed analysis of survey and follow-up observations of microlensing event OGLE-2012-BLG-0406 based on data obtained from 10 different observatories. Intensive coverage of the lightcurve ... [more ▼]

We present a detailed analysis of survey and follow-up observations of microlensing event OGLE-2012-BLG-0406 based on data obtained from 10 different observatories. Intensive coverage of the lightcurve, especially the perturbation part, allowed us to accurately measure the parallax effect and lens orbital motion. Combining our measurement of the lens parallax with the angular Einstein radius determined from finite-source effects, we estimate the physical parameters of the lens system. We find that the event was caused by a $2.73\pm 0.43\ M_{\rm J}$ planet orbiting a $0.44\pm 0.07\ M_{\odot}$ early M-type star. The distance to the lens is $4.97\pm 0.29$\ kpc and the projected separation between the host star and its planet at the time of the event is $3.45\pm 0.26$ AU. We find that the additional coverage provided by follow-up observations, especially during the planetary perturbation, leads to a more accurate determination of the physical parameters of the lens. [less ▲]

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See detailChild labour, Agency and Family dynamics: The Case of Mining in Katanga (DRC)
Andre, Géraldine ULg; Godin, Marie

in Childhood (in press)

In the last three decades, the development of the artisanal and small-scale mining (ASM) sector has been increasing in the Democratic Republic of Congo (DRC), bringing more and more urban families into ... [more ▼]

In the last three decades, the development of the artisanal and small-scale mining (ASM) sector has been increasing in the Democratic Republic of Congo (DRC), bringing more and more urban families into this flourishing business sector, and among them, children. At first glance, one could see children in the mining sector mainly as victims entangled in the flows of raw materials of unbridled capitalism. But this paper aims to look at the often unconceivable, and as a result neglected, social agency of children even when they are involved in stigmatized and prohibited types of child labour. To do so, it relies on the results of a socio-anthropological collective research project on children’s mining activities which was carried out in a small locality called La Ruashi in the city of Lubumbashi (Province of Katanga). The article aims to provide a more comprehensive understanding of what is often normatively only labelled as ‘child labour’ by looking at different spheres of social relations within which children are embedded. Examining the set of social interactions that children have with their families, the broader community and their ‘peers’, several ‘family portraits’ are offered, highlighting a heterogeneity of social interpretations regarding this ‘new’ form of child work. It will be shown that for families from middle-class background, this kind of work is often socially disruptive, at the forefront of inter-generational conflict. As for families from lower classes, social changes induced by children’s mining activities are often better incorporated into the family habitus. Common social changes encountered in all families irrespective of class belonging will also be portrayed, showing the transversal societal impact these ‘new’ forms of child economic activities can provoke at a micro level. [less ▲]

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See detailPhysiological and bio-functional properties of gum arabic: a notable interest for certain human diseases
Eloundou Mballa, Pierre; Goffin, Dorothée ULg; Destain, Jacqueline ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (in press)

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See detailBrain metabolic dysfunction in Capgras delusion during Alzheimer’s disease: a positron emission tomography study
Jedidi, Haroun ULg; Daury, Noémy; Rémi, Capa et al

in American Journal of Alzheimer's Disease & Other Dementias (in press)

Capgras delusion is characterized by the misidentification of people and by the delusional belief that the misidentified persons have been replaced by impostors, generally perceived as persecutors. Since ... [more ▼]

Capgras delusion is characterized by the misidentification of people and by the delusional belief that the misidentified persons have been replaced by impostors, generally perceived as persecutors. Since little is known regarding the neural correlates of Capgras syndrome, the cerebral metabolic pattern of a patient with probable Alzheimer’s disease (AD) and Capgras syndrome was compared with those of 24 healthy elderly subjects and 26 AD patients without delusional syndrome. Compared to the healthy and AD groups, the patient had significant hypometabolism in frontal and posterior midline structures. In light of current neural models of face perception, our patient’s Capgras syndrome may be related to impaired recognition of a familiar face, subserved by the posterior cingulate/precuneus cortex, and impaired reflection about personally relevant knowledge related to a face, subserved by the dorsomedial prefrontal cortex. [less ▲]

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See detailA generic approach for solving nonlinear-discrete security-constrained power flow problems in large-scale systems
Platbrood, Ludovic; Capitanescu, Florin; Crisciu, Horia et al

in IEEE Transactions on Power Systems (in press)

This paper proves the practicality of an iterative algorithm for solving realistic large-scale SCOPF problems. This algorithm is based on the combination of a contingency filtering scheme, used to ... [more ▼]

This paper proves the practicality of an iterative algorithm for solving realistic large-scale SCOPF problems. This algorithm is based on the combination of a contingency filtering scheme, used to identify the binding contingencies at the optimum, and a network compression method, used to reduce the complexity of the post-contingency models included in the SCOPF formulation. We show that by combining these two complementary ideas, it is possible to solve in a reasonable time SCOPF problems on large power system models with a large number of contingencies. Unlike most results reported for large-scale SCOPF problems, our algorithm uses a non-linear AC network model in both pre-contingency and post-contingency states, optimizes both active/reactive powers flows jointly, and treats the discrete variables. The proposed algorithm is implemented with state-of-the-art solvers and applied to two systems: a national grid with 2563 buses and 1297 contingencies, and a model of the European transmission network with 9241 buses and 12000 contingencies. [less ▲]

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See detailChronique de jurisprudence communautaire - Les marchés publics dans les Etats membres,
Durviaux, Ann-Lawrence ULg

in Revue Trimestrielle de Droit Européen (in press), 2012/2

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See detailCompte rendu de D. van Mal-Maeder, A. Burnier, L. Núñez (éds.): Jeux de voix. Énonciation, intertextualité et intentionnalité dans la littérature antique
Macedo, Gabriel ULg

in Antiquité Classique : Revue Interuniversitaire d'Etudes Classiques (in press)

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See detailIsotopic tracing of sediment components that are assimilated by epibiontic juveniles of Holothuria scabra (Holothuroidea)
Plotieau, Thomas; Lepoint, Gilles ULg; Lavitra, Thiery et al

in Journal of the Marine Biological Association of the United Kingdom (in press)

Despite H. scabra’s wide distribution and status as one of the best candidates for sustaining the development of tropical sea cucumber aquaculture, very few data are available regarding the organic ... [more ▼]

Despite H. scabra’s wide distribution and status as one of the best candidates for sustaining the development of tropical sea cucumber aquaculture, very few data are available regarding the organic fraction it assimilates in practice. In this study we report experimental results where H. scabra’s diet was supplemented with various 15N-labelled organic fractions of sediment. We used juveniles weighing between 38- 88 mg at the beginning of the experiment (ca. 2 cm long and 30 days old). Their growth was measured over a four week period and their 15N composition recorded. The results showed that H. scabra juveniles assimilated all added organic components from both dissolved and particulate fractions of the sediment. Bacteria seem to be an important food source for juveniles, even more so than microphytobenthos (diatoms). [less ▲]

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See detailJatropha curcas L. (Euphorbiaceae): Insectes ravageurs et propriétés biocides
Abdoul Habou, Zakari; Toudou, Adam; Haubruge, Eric ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (in press)

Jatropha curcas, ou Pourghère, est un arbuste de la famille des Euphorbiacées, largement répandu dans les pays tropicaux. Ses graines sont riches d'une huile pouvant servir de biocarburant dans les ... [more ▼]

Jatropha curcas, ou Pourghère, est un arbuste de la famille des Euphorbiacées, largement répandu dans les pays tropicaux. Ses graines sont riches d'une huile pouvant servir de biocarburant dans les moteurs diesels modifiés. La plante est attaquée par divers insectes ravageurs appartenant principalement aux ordres des Hétéroptères, Coléoptères et Orthoptères. Ils provoquent des dégâts sur les fruits, les inflorescences et les feuilles. Les ravageurs les plus fréquemment observés sur J. curcas sont des punaises du genre Pachycoris (Hétéroptère : Scutelleridae), qui sont largement répandues au Mexique, en Australie, aux États-Unis, au Brésil et au Nicaragua. Ces punaises causent des dégâts importants sur les fruits et provoquent la malformation des graines, et avec elle une réduction de la teneur en huile. Même si les arbustes de Jatropha sont victime d'infestations d'insectes, plusieurs études démontrent l'effet insecticide de son huile contre des ravageurs importants tels que Busseola fusca (Fuller) (Lépidoptère : Noctuidae), Sesamia calamistis Hampson (Lépidoptère : Noctuidae), Aphis gossypii Glover (Homoptère: Aphididae) et Callosobruchus chinensis L. (Coléoptère : Bruchidae). Dans ce document, nous présentons dans une première partie les principaux insectes ravageurs de J. curcas et dans une seconde section les effets insecticides démontrés de son huile. [less ▲]

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See detailContribution à un lexique épigraphique: "deltographéma"
Famerie, Etienne ULg

in Zeitschrift für Papyrologie und Epigraphik (in press)

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See detailL’« originalité » perceptive d’un sujet pervers au test de Rorschach
Englebert, Jérôme ULg

in Evolution Psychiatrique (in press)

The author starts with a discussion about two notions appearing into the Rorschach test: the perception and the apperception. By this way, it is suggest ways for a phenomenological study of the Rorschach ... [more ▼]

The author starts with a discussion about two notions appearing into the Rorschach test: the perception and the apperception. By this way, it is suggest ways for a phenomenological study of the Rorschach test. These proposals are consistent with those of the Comprehensive System (Proposed by John E. Exner). Then the author proposes a protocol analyzing of a patient with a perverse psychological functioning. In one hand, the result obtained by the Form Quality (FQ) is detailed in particular regarding to the status of unusual perceptions. According to the Comprehensive System proposed by J.E. Exner, a significant proportion of responses "u" (46% for this protocol) indicates that the person is not influenced by any social request or any expectation and some of his behaviors could ignore or avoid any question about social convention. From an other point of view, when analyzing these data, an adaptive dimension for these unusual perceptions is identified. The pervert perceives the stimuli that "really exists" according to him not everyone can perceive it. This advantage allows a better adaptation to the environment and the ability to change this environment. The manipulation (a particular skill that is most of the time attributed to the perverse person) is probably a consequence of having an original perception of reality. It is also discussed the interpretation of the "anatomical content" in connection with this adaptive hypothesis. In addition, the author also discusses a particular answer of the protocol: the answer "shoes" that presents a specific perceptual characteristic. [less ▲]

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See detailLa présence isiaque dans le Péloponnèse. Sur les traces des lieux de culte
Veymiers, Richard ULg

in Revue archéologique. Bulletin de la Société française d'archéologie classique (SFAC). (in press)

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See detailIntraoperative MRI versus standard neuron- avigation for the neurosurgical treatment of glioblastoma: a randomized controlled trial.
Kubben, PL; Scholtes, Félix ULg; Schijns, OEMG et al

in Surgical Neurology (in press)

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See detailPre-transplant prognostic factors of long-term survival after allogeneic peripheral blood stem cell transplantation with matched related/unrelated donors
SERVAIS, Sophie ULg; Porcher, Raphael; Xhaard, Aliénor et al

in Haematologica (in press)

Mobilized peripheral blood has become the predominant stem cell source for allogeneic hematopoietic cell transplantation. Few studies have compared outcome of HLA-matched related and HLA-matched unrelated ... [more ▼]

Mobilized peripheral blood has become the predominant stem cell source for allogeneic hematopoietic cell transplantation. Few studies have compared outcome of HLA-matched related and HLA-matched unrelated donor peripheral blood stem cell transplants. We conducted a retrospectivesingle-center analysis of 442 patients with hematologic malignancies who underwent peripheral blood stem cell transplantationfrom matched related or matched unrelated donorand we analyzed prognostic factors for long-term survival.To account for disease/status heterogeneity, patients were risk-stratified according to theDisease Risk Index.Five-year overall survival was similar aftertransplants with matched related and unrelated donor. Because donor age ≥60 years impacted outcome during model building, we further considered 3 groups of donors: matched unrelated donor (aged < 60 years by definition), matched related donor aged <60 yearsand matched related donoraged ≥60 years. In multivariate analysis, donor type/age groupand graft CD34+ and CD3+ cell doses significantly impactedlong-term survival. Transplants with matched unrelated donor and matched related donor<60years resulted in similar long-term survival while transplant with matched related donor≥60years was associated with higher risks for late mortality and treatment failure. Lower mortality risks were observed after transplant with CD34+ cell dose > 4.5 x 106/kgand CD3+ cell dose > 3 x 108/kg. The Disease Risk Index failed to predictsurvival. We builtan “Adapted Disease Risk Index” by modifying risks for myeloproliferative neoplasms and multiple myeloma, thatimproved stratification ability for progression-free survivalbut not for overall survival. [less ▲]

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See detailCarrying capacity of stainless steel columns in the low slenderness range.
Rossi, Barbara ULg; Rasmussen, Kim J.R.

in Journal of Structural Engineering (in press)

The strength of thin-walled stainless steel columns has been investigated extensively over the past few years. In European standards, the concept of section classification for determining the cross ... [more ▼]

The strength of thin-walled stainless steel columns has been investigated extensively over the past few years. In European standards, the concept of section classification for determining the cross-section capacity is used. In this system, for Class 4 cross-sections, the Effective Width Method (EWM) must be used to account for the effect of local buckling. Because of the complexity and limitations of this method, other methods have been developed, such as the Direct Strength Method (DSM) for cold-formed thin-walled profiles and the Continuous Strength Method (CSM), initially established for members made of nonlinear metallic materials. In the CSM, to take advantage of strain hardening, a deformation-based design approach employing a continuous relationship between the cross-sectional slenderness and the cross-sectional deformation capacity is used. To a large extent, the CSM yield accurate predictions, especially in the low slenderness range where the current DSM design procedures for members submitted to pure compression tends to produce conservative predictions, for materials with pronounced strain hardening such as stainless steel alloys. The present paper presents an extension of the traditional DSM which provides accurate design strength predictions in the low slenderness range for stainless steel thin-walled section columns failing by distortional, local and overall buckling. It contains practical information concerning the reference experimental data and draws conclusions about the justification of the proposed analytical formula. The paper is divided into three main parts: the description of the database, the establishment of the design model and a reliability analysis of the method. [less ▲]

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See detailIndividual methane predictions from milk mid-infrared spectra of Holstein dairy cows.
Soyeurt, Hélène ULg; Vanlierde, Amélie; Dehareng, Frédéric et al

in Journal of Dairy Science (in press)

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See detailRelationships between mind-wandering and attentional control abilities in young adults and adolescents
Stawarczyk, David ULg; Majerus, Steve ULg; Catale, Corinne ULg et al

in Acta Psychologica (in press)

Recent findings suggest that mind-wandering—the occurrence of thoughts that are both stimulus-independent and task-unrelated—corresponds to temporary failures in attentional control processes involved in ... [more ▼]

Recent findings suggest that mind-wandering—the occurrence of thoughts that are both stimulus-independent and task-unrelated—corresponds to temporary failures in attentional control processes involved in maintaining constant task-focused attention. Studies supporting this proposal are, however, limited by a possible confound between mind-wandering episodes and other kinds of conscious experiences, such as external distractions (i.e., interoceptive sensations and exteroceptive perceptions). In the present study, we addressed this issue by examining, in adolescents and young adults, the relations between tasks measuring attentional control abilities and a measure of mind-wandering that is distinct from external distractions. We observed (1) that adolescents experienced more frequent external distractions, but not more mind-wandering, than young adults during the Sustained Attention to Response Task (SART) and (2) that, in young adults, the influence of external distractions on SART performance was fully accounted for by attentional control abilities, whereas mind-wandering was associated with decreases in SART performance above and beyond what was explained by attentional control abilities. These results show that mind-wandering cannot be entirely reduced to failures in the ability to maintain one’s attention focused on task, and suggest that external distractions rather than mind-wandering are due to attentional control failures. [less ▲]

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See detailIl design come strumento politico e ideologico, tra Firenze e Torino (1965-1975)
Prina, Daniela ULg

in Allegoria (in press), 68(2),

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See detailEvaluation of the quantitative performances of Supercritical Fluid Chromatography : from method development to validation
Dispas, Amandine ULg; Lebrun, Pierre ULg; Ziemons, Eric ULg et al

in Journal of Chromatography. A (in press)

Recently, the number of papers about SFC increased drastically but scientists did not truly focus their work on quantitative performances of this technique. In order to prove the potential of UHPSFC, the ... [more ▼]

Recently, the number of papers about SFC increased drastically but scientists did not truly focus their work on quantitative performances of this technique. In order to prove the potential of UHPSFC, the present work discussed about the different steps of the analytical life cycle of a method: from development to validation and application. Moreover, the UHPSFC quantitative performances were evaluated in comparison with UHPLC, which is the main technique used for quality control in the pharmaceutical industry and then could be considered as a reference. The methods were developed using Design Space strategy, leading to the optimization of robust method. In this context, when the Design Space optimization shows guarantee of quality, no more robustness study is required prior to the validation. Then, the methods were geometrically transferred in order to reduce the analysis time. The UHPSFC and UHPLC methods were validated based on the total error approach using accuracy profile. Even if UHPLC showed better precision and sensitivity, UHPSFC method is able to give accurate results in a dosing range larger than the 80–120% range required by the European Medicines Agency. Consequently, UHPSFC results are valid and could be used for the control of active substance in a finished pharmaceutical product. Finally, UHPSFC validated method was used to analyse real samples and gave similar results than the reference method (UHPLC). [less ▲]

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See detailLa réflexivité : de la vertu épistémologique aux versions mises en rapports, en passant par les incidents diplomatiques
Thoreau, François ULg; Despret, Vinciane ULg

in Revue d'Anthropologie des Connaissances (in press)

Dans cet article, nous proposons la mise en œuvre d’un dispositif d’enquête que nous qualifions de « diplomatique ». L’objet de cette enquête est la question de la réflexivité des scientifiques. Tout au ... [more ▼]

Dans cet article, nous proposons la mise en œuvre d’un dispositif d’enquête que nous qualifions de « diplomatique ». L’objet de cette enquête est la question de la réflexivité des scientifiques. Tout au long de l’article, nous explorons avec les scientifiques que nous avons rencontré différents modes sur lesquels peut se décliner cette « réflexivité ». Toutefois, chacun de ces modes nous invite à considérer plusieurs manières de partager ce problème et de le construire avec eux. Chemin faisant, il n’y a donc pas que la question de la réflexivité qui bifurque, mais également le sens même de l’approche diplomatique à laquelle nous nous étions assignés. C’est à cette exploration conjointe des significations de la réflexivité des scientifiques et des modalités de la diplomatie que nous convions le lecteur. [less ▲]

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See detailGlobal Power after the post-Cold War: the case of Chinese Power
Wintgens, Sophie ULg

in Revista Brasileira de Politica Internacional (in press)

The pre-eminence of the realistic conception has long locked the field of study of the power in International Relations, which is nowadays highly questioned. The analysis of some “new powers” emergence is ... [more ▼]

The pre-eminence of the realistic conception has long locked the field of study of the power in International Relations, which is nowadays highly questioned. The analysis of some “new powers” emergence is as such a tremendous learning experience. In order to go beyond the classical antagonism between the institutional perspectives (cooperation) and the realistic ones (rivalry), this paper deals with the power in an alternative way, from a heterodox approach of hegemony, which allows us to make out the phenomena of insidious and not felt so domination. Following the example of China, committed to building a status of world power, sustained by a self-legitimizing discourse abounding with Third-World overtones (anti-hegemonism, multipolarization of the world, South-South cooperation, etc.), the increase in its global influence does not only depend on the availability of its – tangible and intangible – resources, nor on its ability to mobilize them adequately (smart power). China also values the image that it has of itself (self-perception), the image that it tends to convey on the international stage (representation), as well as the perception of its status by the other actors of the international system (external recognition). The power of China is measured through its capacity to “assert itself as a reference” for its emerging peers, or even for Western powers. [less ▲]

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See detailInvestigating word recognition in intercomprehension: methods and findings
Möller, Robert ULg; Zeevaert, Ludger ULg

in Linguistics (in press), 53(2),

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See detailQuelles dynamiques d'identification organisationnelle lors de processus de modernisation? Analyse d'une administration belge.
Rondeaux, Giseline ULg

in Revue Internationale des Sciences Administratives [= RISA] (in press), 80(mars),

Dans les diverses réformes conçues et implémentées en vue de moderniser l’administration, l’accent est mis sur les marchés avec un focus particulier sur les citoyens désormais clients (Korunka et al ... [more ▼]

Dans les diverses réformes conçues et implémentées en vue de moderniser l’administration, l’accent est mis sur les marchés avec un focus particulier sur les citoyens désormais clients (Korunka et al., 2007 ; Thomas, 2012). Alors que les approches initiales du NPM se centraient sur l’efficience, l’applicabilité et la pertinence de techniques managériales importées du secteur privé dans les organisations publiques (Ferlie et al., 1996), les réformes plus récentes tendent à inclure d’autres objectifs tels que la gestion de la qualité, la transparence et le centrage client (Meier & O’Toole, 2007 ; Lapsley, 2008). Du Gay (1996), pour sa part, affirme que le NPM est un projet identitaire, dans la mesure où il vise à redéfinir la main d’œuvre (en termes de profils et compétences recherchées, ciblant la figure du travailleur-entrepreneur en lieu et place du fonctionnaire). Bon nombre d’études interrogent également les paradoxes et les tensions intrinsèques du modèle NPM (Lynn, 1998; Aucoin, 1990; Hood, 2000 ; Goldfish & Wallis, 2010), les difficultés liées à sa mise en œuvre (Mathiasen, 1999 ; Dunleavy et al., 2006 ; Jones & Cole, 2009) ou à l’évaluation de ses outputs concrets pour l’administration (Pollitt, 1993; Hodge, 1999). De façon générale, la littérature met en lumière les effets que ces réformes ont produit sur les différentes facettes de l’administration : ses modes de fonctionnement et ses structures (Gualmini, 2008), son management, ses stratégie et pratiques de GRH (Pichault, 2007), ses missions et son identité organisationnelle (Horton, 2006) mais aussi sur l’ethos (Maesschalk, 2004 ; Fortier, 2010) et la motivation des fonctionnaires (Vandenabeele et Hondeghem, 2007), entre autres éléments. Plusieurs auteurs mentionnent les débats et questionnements identitaires qui se produisent lorsque l’organisation fait face à des situations de bouleversement profond (Albert et Whetten, 1985 ; Dutton et al., 1994 ; Alvesson et Empson, 2008). Dans un processus de réforme, l’organisation se remet en question et s’interroge sur ce qu’elle est, ce qu’elle devient, ce qu’elle veut être, propulsant l’identité organisationnelle au premier plan des préoccupations (Skalen, 2004 ; Meyer & Hammerschmid, 2006). Dans un contexte où l’identité organisationnelle est en proie à tel bouleversement, comment ses membres en font-ils l’expérience ? Ce questionnement, à la base de cet article, se pose en termes d’identification organisationnelle, unissant dans une même équation deux termes centraux : l’identité organisationnelle et les perceptions qu’ont les membres du contexte en évolution. La question que nous adressons est la suivante : dans un contexte d’organisation publique en mutation, quelles sont les dynamiques identitaires à l’oeuvre en regard de la perception des évolutions du contexte des individus ? A partir de l'analyse de la réforme Copernic (introduction du NPM dans l'administration fédérale belge) réalisée en 2005-2006, nous avons élaboré de manière inductive une typologie des logiques et profils identitaires, issue de l’analyse d’entretiens qualitatifs (Rondeaux, 2007, 2008, 2010). Sur base de celle-ci, nous avons mené une enquête par questionnaires auprès d’une administration régionale belge, engagée dans un processus de modernisation, en vue de vérifier l’existence et la pertinence de cette typologie, au moyen d’une démarche quantitative. Réalisée en 2010, cette enquête illustre en particulier trois aspects : 1. les représentations associées au travail au sein de l’administration en regard de son évolution, et le degré d’identification à l’institution dans ce contexte ; 2. la perception de la modernisation et le rôle de la hiérarchie dans cette perspective ; 3. les identités représentées au sein de l’institution (logiques institutionnalisée et alternatives, profils en congruence ou en dissonance). Nous montrons notamment que la majorité des positions est marquée par la dissonance, principalement relative à la valeur ajoutée de la modernisation et à sa mise en œuvre concrète. [less ▲]

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See detailLa grammaire de la République. Langages de la politique chez Francesco Guicciardini (1483-1540)
Moreno, Paola ULg

in Giornale Storico della Letteratura Italiana (in press)

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See detailA Double-Blind, Placebo Controlled, Randomized Trial to Assess the Impact of a Monthly Administration of 50,000 IU of Vitamin D3 for 6 Months on Serum Levels of 25-Hydroxyvitamin D in Healthy Young Adults
Brunel, Elodie ULg; SCHNITZLER, Maryline ULg; Foidart-Dessalle, Marguerite ULg et al

in International Journal of Endocrinology (in press)

In this double blind, unicentre, randomized, placebo controlled study, we evaluated the changes in 25-hydroxyvitamin D (25(OH)D) serum levels in 150 young Belgian adults (18–30 years), monthly ... [more ▼]

In this double blind, unicentre, randomized, placebo controlled study, we evaluated the changes in 25-hydroxyvitamin D (25(OH)D) serum levels in 150 young Belgian adults (18–30 years), monthly supplemented with 50,000 IU of vitamin D (VTD) or placebo for 6 months, from November 2010 to May 2011. At T0, 30% of the population presented 25(OH)D serum levels below 20 ng/mL. In the VTD-treated group, mean serum levels increased from 21.2 ± 8.2 to 30.6 ± 8.8 ng/mL (𝑃 < 0.001) at T3mo and to 36.0 ± 9.2 ng/mL (𝑃 < 0.001) at T6mo. Despite documented VTD intake, no changes in serum levels were, however, observed in 10% of the treated group. In the placebo group, mean 25(OH)D serum levels decreased from22.8 ± 8.5 to 14.0 ± 6.9 ng/mL at T3mo (𝑃 < 0.001) but returned to values not significantly different from those observed at T0 (23.5 ± 8.6 ng/mL) at T6mo. No difference between serum calcium levels was observed between the groups throughout the study. In conclusion, monthly supplementation with50,000UIofVTDinwinter canwarrant serum25(OH)Dlevels above 20ng/mL in96.2%of thosehealthy young adultswithout inducing unacceptably high 25(OH)D concentration. This supplementation is safe andmay be proposed without 25(OH)D testing. [less ▲]

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See detailTraumatic aneurysm of the distal anterior cerebral artery explained by a fibrous adhesion to the falx. Case report.
Scholtes, Félix ULg; HENROTEAUX, Adrienne ULg; OTTO, Bernard ULg et al

in Journal of Neurological Surgery. Part A, Central European Neurosurgery (in press)

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See detailSimulation-based study comparing multiple imputation methods for non-monotone missing ordinal data in longitudinal settings
Donneau, Anne-Françoise ULg; Mauer, Murielle; Lambert, Philippe ULg et al

in Journal of Biopharmaceutical Statistics (in press)

The application of multiple imputation (MI) techniques as a preliminary step to handle missing values in data analysis is well established. The MI method can be classified into two broad classes, the ... [more ▼]

The application of multiple imputation (MI) techniques as a preliminary step to handle missing values in data analysis is well established. The MI method can be classified into two broad classes, the joint modeling and the fully conditional specification approaches. Their relative performance for the longitudinal ordinal data setting under the missing at random (MAR) assumption is not well documented. This paper intends to fill this gap by conducting a large simulation study on the estimation of the parameters of a longitudinal proportional odds model. The two MI methods are also illustrated in quality of life data from a cancer clinical trial. [less ▲]

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See detailIntroduction
Dumont, Jonathan ULg; Masson, Christophe ULg

in Moyen Age (Le) (in press), 120(3-4),

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See detailApprentissage collectif et réflexivité systémique: le rôle des aceurs tiers dans la structuration des méta-organisations
Xhauflair, Virginie ULg

in Interventions Economiques = Papers in Political Economy (in press)

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See detailImpact of vocal load on breathiness: Perceptual evaluation
Remacle, Angélique ULg; Schoentgen, Jean; FINCK, Camille ULg et al

in Logopedics, Phoniatrics, Vocology (in press)

Objectives: To evaluate the impact on voice of 2 hours of continuous oral reading. Methods: Fifty normophonic women underwent two sessions of voice loading in which the required intensity level varied: 60 ... [more ▼]

Objectives: To evaluate the impact on voice of 2 hours of continuous oral reading. Methods: Fifty normophonic women underwent two sessions of voice loading in which the required intensity level varied: 60-65 dB(A) for the first session, and 70-75 dB(A) for the second session. Ten expert judges evaluated the breathiness of one sentence recorded before and after each loading session. Pairs of stimuli were presented randomly to the judges, who were asked to designate the breathiest sample. Results: A significant decrease in breathiness was observed following both sessions, suggesting an improvement of voice subsequent to loading. When comparing the two intensity levels, no difference was found for breathiness after vocal loading. [less ▲]

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See detailCapital symbolique
Durand, Pascal ULg

in COnTEXTES : Revue de Sociologie de la Littérature (in press)

Présentation et discussion du concept de « Capital symbolique » dans la sociologie de Pierre Bourdieu.

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See detailDe Jacques Antoine aux Eperonniers : l'édition littéraire en Belgique au passé et au présent (seconde partie)
Durand, Pascal ULg; Habrand, Tanguy ULg

in Textyles : Revue des Lettres Belges de Langue Française (in press)

Second volet d'un article en deux parties portant sur l'édition littéraire contemporaine en Belgique, autour de deux maisons importantes : les éditions Jacques Antoine et les éditions des Eperonniers. La ... [more ▼]

Second volet d'un article en deux parties portant sur l'édition littéraire contemporaine en Belgique, autour de deux maisons importantes : les éditions Jacques Antoine et les éditions des Eperonniers. La seconde partie de cette étude porte plus précisément sur la transition d'une maison à l'autre et sur la politique de la création contemporaine suivie par Lysiane d'Hayere aux Eperonniers. [less ▲]

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See detailDes intentions aux actes : la volition en conseil d'orientation
Broonen, Jean-Paul ULg

in L'Orientation Scolaire et Professionnelle (in press)

A model limited to motivation construct to explain the way from setting a vocational goal to its achievement cannot claim to give an account of how to overcome regulatory problems during goal striving. A ... [more ▼]

A model limited to motivation construct to explain the way from setting a vocational goal to its achievement cannot claim to give an account of how to overcome regulatory problems during goal striving. A model linking volition to motivation is needed. In particular, implementation intentions have been proved to be effective in helping the initiation of goal striving, shielding goal pursuit from unwelcome influences, and disengagement from not successful courses of action. It is proposed to extend the application of this volitional cognitive tool to career counselling. [less ▲]

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See detailElectromechanical FEM models and electrostatic forces near sharp corners
Hannot, Stephan; Rixen, Daniel; Andreykiv, Andriy et al

in International Journal for Numerical Methods in Engineering (in press)

Accounting for multiphysical coupling in models of Micro Electro Mechanical Systems (MEMS) is essential for accurate simulations. One essential multiphysical effect in MEMS is the electromechanical ... [more ▼]

Accounting for multiphysical coupling in models of Micro Electro Mechanical Systems (MEMS) is essential for accurate simulations. One essential multiphysical effect in MEMS is the electromechanical coupling since electrostatic forces are often used for actuation or sensing in those devices. Often MEMS are designed such that their shape exhibits many corners. In this paper two different numerical approaches are used to model this coupling using the Finite Element Method: the electrostatic forces are either derived from the variational approach or a local approach based on the Maxwell stress tensor such as implemented in commercial Finite Element codes. The evaluation of electrostatic forces near corners is investigated in detail and in this paper the two approaches are compared around corners. Although the issue of numerical models around singularities is not new, the question addressed here is related to the computation of electric forces in the vicinity of corners. Since those forces are quadratic functions of the electric field, namely the gradient of the electric potential, here the primal unknown, computing those forces accurately is a challenge in itself. Elements which use special shape functions are used to discretize the field near this corner singularity as well. In the work presented here, it is shown that a significant discrepancy appears in the electrostatic force computed around a corner depending on the discretization approach considered, and we conclude that the variational approach or equivalently the full Maxwell tensor should be used to properly evaluate electrostatic forces around corners. [less ▲]

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See detailAssessment of Solvent Degradation within a Global Process Model of Post-Combustion CO2 Capture
Léonard, Grégoire ULg; Toye, Dominique ULg; Heyen, Georges ULg

in Computer Aided Chemical Engineering (in press), 33

Solvent degradation may be a major drawback for the large-scale implementation of post-combustion CO2 capture due to amine consumption and emission of degradation products. However, its influence on the ... [more ▼]

Solvent degradation may be a major drawback for the large-scale implementation of post-combustion CO2 capture due to amine consumption and emission of degradation products. However, its influence on the process operations has rarely been studied. In the present work, a kinetics model describing solvent oxidative and thermal degradation has been developed based on own experimental results for the benchmark solvent, i.e. 30 wt% monoethanolamine (MEA) in water. This model has been included into a global Aspen Plus model of the CO2 capture process. The selected process modelling approaches are described in the present work. Using the resulting simulation model, optimal operating conditions can be identified to minimize both the energy requirement and the solvent degradation in the process. This kind of process model assessing solvent degradation may contribute to the design of large-scale CO2 capture plants to consider not only the process energy penalty, but also its environmental penalty. Indeed, both aspects are relevant for the large-scale deployment of the CO2 capture technology. [less ▲]

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See detailCOMMENT JE TRAITE ... L’arrêt cardio-respiratoire extrahospitalier : la fenêtre du centraliste 112
STIPULANTE, Samuel ULg; ZANDONA, Régine; EL-FASSI, Mehdi ULg et al

in Revue Médicale de Liège (in press), 69

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See detailVirtual reality as a complementary therapy to sexual addiction treatment
Cismaru Inescu, Adina; Andrianne, Robert ULg; Triffaux, Jean-Marc ULg

in International Journal of Advanced Computer Science (in press), 3(7), 1-5

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See detailThe RIAD peptidomimetic inhibits HIV-1 replication in humanized NSG mice
Singh, Maneesh; Singh, Pratibha; Vaira, Dolores et al

in European Journal of Clinical Investigation (in press)

Background Increased intracellular concentration of cyclic AMP (cAMP) in T cells is associated with various immunodeficiency conditions including human immunodeficiency virus (HIV) infection. Several ... [more ▼]

Background Increased intracellular concentration of cyclic AMP (cAMP) in T cells is associated with various immunodeficiency conditions including human immunodeficiency virus (HIV) infection. Several reports indicate a critical role of activated protein kinase A (PKA) in the susceptibility of cells to HIV infection. We have used a cell permeable, stable peptidomimetic version (P3) of the RI-anchoring disruptor (RIAD), which prevents PKA interaction with A-kinase-anchoring proteins (AKAPs). It is known that RIAD peptide abrogates effects of localized cAMP signalling through anchored type I PKA in lymphocytes and prevents murine AIDS (MAIDS) infection when expressed as a transgene in mice. Methods and Results In vitro HIV-infected human peripheral blood mononuclear cells (PBMCs) show reduced levels of p24 and intracellular cAMP in T cells when treated with RIAD peptidomimetic (RIAD-P3). Humanized NOD/SCID/IL2cnull (NSG) mice infected with HIV-1 JRCSF and treated with RIAD-P3 (3􏰀5 mg) once every 2 weeks showed significantly reduced levels of viral load at +28, +42 and +56 days and increased CD4 numbers at +56 days after the start of treatment. RIAD-P3-treated humanized mice had lower levels of intracellular cAMP in T cells sorted from splenocytes. Conclusions Treatment with RIAD-P3 limits HIV-1 viral replication and stabilizes CD4 levels by mechanisms involving cAMP/PKA-I pathway in human PBMCs and humanized NSG mice. [less ▲]

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See detailEnjeux politiques et critiques d'une philosophie des normes
Caeymaex, Florence ULg; Pieron, Julien ULg

in Dissensus (in press), 6(printemps 2014),

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See detailReview: Yves Gingras, Sociologie des sciences, Paris, PUF, 2013, pp.128
Vangeebergen, Thomas ULg

in Tecnoscienza (in press), 5(1),

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See detailLes voyages du goût, entre localité et exotisme.
Mescoli, Elsa ULg

in Anthropology of Food: Fumey, G. ; Jackson, P. et Raffard, P. Culture Alimentaires et Territoires (in press)

« Savourer la nourriture et respirer la culture marocaine deviennent une expérience et une émotion unique, à découvrir et à vivre grâce à la combinaison d’arômes, goûts, couleurs, formes et musiques ». Au ... [more ▼]

« Savourer la nourriture et respirer la culture marocaine deviennent une expérience et une émotion unique, à découvrir et à vivre grâce à la combinaison d’arômes, goûts, couleurs, formes et musiques ». Au travers de ce slogan, un renommé restaurant d’inspiration marocaine de la ville de Milan en Italie, invitait ses clients à voyager au travers de leur sensorialité dans une culture alimentaire (et par synecdoque, une culture tout court) autre. Le goût les aurait amenés à expérimenter un exotisme, qui était néanmoins contrôlé, car certaines conditions imposées par les normes locales faisaient en sorte que le déplacement vécu ne fût pas excessivement déstabilisant. Le résultat de ces négociations consistait d’un menu qui accostait les gastronomies marocaine et italienne (ou les procédures de l’une et de l’autre) dans certains plats décrits comme « fusion », qui satisfaisaient (ou non) les exigences des clients. Dans cet article, je vise à mettre en évidence les mécanismes de production discursive et matérielle de ces plats, ainsi comme les opinions des consommateurs. Pour ce faire, j’analyserai le matériel ethnographique collecté auprès du local en question en le comparant avec les pratiques observés dans d’autres restaurants milanais. En ce qui concerne les effets obtenus, j’appuierait mon analyse sur une plateforme de médias sociaux consacrée aux recensions d’endroits et locaux touristiques. La culture alimentaire sera étudiée dans ses aspects symboliques mais aussi matériels, en faisant également recours au matériel visuel récolté. [less ▲]

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See detailA.P.M.H. Lardinois, J.H Blok et M.G.M. Van der Poel, Sacred Words: Orality, Literacy and Religion, Leiden-Boston, Brill, 2011
Delli Pizzi, Aurian ULg

in Antiquité Classique : Revue Interuniversitaire d'Etudes Classiques (in press)

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See detailCompte-rendu de l'ouvrage de Boyd Taylor COOLMAN et Dale M. COULTER : Trinity and creation
Close, Florence ULg

in Cahiers de Civilisation Médiévale (in press)

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See detailQuantitative temperature monitoring of a heat tracing experiment using cross-borehole ERT
Hermans, Thomas ULg; Wildemeersch, Samuel ULg; Jamin, Pierre ULg et al

in Geothermics (in press)

The growing demand for renewable energy leads to an increase in the development of geothermal energy projects and heat has become a common tracer in hydrology and hydrogeology. Designing geothermal ... [more ▼]

The growing demand for renewable energy leads to an increase in the development of geothermal energy projects and heat has become a common tracer in hydrology and hydrogeology. Designing geothermal systems requires a multidisciplinary approach including geological and hydrogeological aspects. In this context, electrical resistivity tomography (ERT) can bring relevant, qualitative and quantitative information on the temperature distribution in operating shallow geothermal systems or during heat tracing experiments. We followed a heat tracing experiment in an alluvial aquifer using cross-borehole time-lapse ERT. Heated water was injected in a well while water of the aquifer was extracted at another well. An ERT section was set up across the main flow direction. The results of ERT were transformed into temperature using calibrated petrophysical relationships. These ERT-derived temperatures were then compared to direct temperature measurements in control piezometers collected with distributed temperature sensing (DTS) and groundwater temperature loggers. Spatially, it enabled to map the horizontal and vertical extent of the heated water plume, as well as the zones where maximum temperatures occurred. Quantitatively, the temperatures and breakthrough curves estimated from ERT were in good agreement with the ones observed directly during the rise and maximum of the curve. An overestimation, likely related to 3D effects, was observed for the tail of the heat breakthrough curve. The error made on temperature can be estimated to be between 10 to 20 %, which is a fair value for indirect measurements. From our data, we estimated a quantification threshold for temperature variation of 1.2°C. These results suggest that ERT should be considered when designing heat tracing experiments or geothermal systems. It could help also to assess the geometrical complexity of the concerned reservoirs. It also appears that ERT could be a useful tool to monitor and control geothermal systems once they are in operation. [less ▲]

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See detailCompte rendu de l'ouvrage de Frédéric MARCHESANI, Sur les traces des anciens "pays" de Wallonie
George, Philippe ULg

in Trésor de Liège. Bulletin trimestriel (in press)

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See detailSome misunderstood or unknown tricks (X) (LaTeX)
Merciadri, Luca ULg

in TUGboat (in press)

This is the 10th edition of my TUGboat `Tips & Tricks.' This time, we shall first see how to write `dancing text,' roman numerals, how to draw under and over braces on same elements, and how to display ... [more ▼]

This is the 10th edition of my TUGboat `Tips & Tricks.' This time, we shall first see how to write `dancing text,' roman numerals, how to draw under and over braces on same elements, and how to display aligned (in)equations systems. We will then end by discussing on BibLaTeX and Biber, which constitute a promising alternative to BibTeX. [less ▲]

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See detailCommerce ambulant : les libertés de circulation et la directive services font un tour sur le marché communal
Durviaux, Ann-Lawrence ULg; Delvaux, Thierry ULg

in Administration publique trimestrielle (in press), (2012),

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See detailÉphémérides pour 2012
Daubercies, Laurence ULg

in Cahiers Voltaire : Revue Annuelle de la Société Voltaire (in press)

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See detailAlgebrability and nowhere Gevrey differentiability
Bastin, Françoise ULg; J. Alberto, Conejero; Esser, Céline ULg et al

in Israel Journal of Mathematics (in press)

We show that there exist c-generated algebras (and dense in C^infty([0,1])) every nonzero element of which is a nowhere Gevrey diff erentiable function. This leads to results of dense algebrability (and ... [more ▼]

We show that there exist c-generated algebras (and dense in C^infty([0,1])) every nonzero element of which is a nowhere Gevrey diff erentiable function. This leads to results of dense algebrability (and, therefore, lineability) of functions enjoying this property. In the process of proving these results we also provide a new construction of nowhere Gevrey di fferentiable functions. [less ▲]

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See detailFernand De Visscher et la Société Internationale d'Histoire des Droits de l'Antiquité
Gerkens, Jean-François ULg

in Revue Historique de Droit Français et Etranger [=RHD] (in press)

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See detailPoly(methyl methacrylate)/graphene oxide nanocomposites by a precipitation polymerization process and their dielectric and rheological characterization
Thomassin, Jean-Michel ULg; Trifkovic, Milana; Alkarmo, Walid et al

in Macromolecules (in press)

We report a method for achieving controlled dispersion of graphene oxide (GO) in poly(methyl methacrylate) (PMMA) via the precipitation polymerization process in a water/ methanol mixture. GO acts as a ... [more ▼]

We report a method for achieving controlled dispersion of graphene oxide (GO) in poly(methyl methacrylate) (PMMA) via the precipitation polymerization process in a water/ methanol mixture. GO acts as a surfactant and adsorbs on the interface between polymerized PMMA particles and solvent mixture. Scanning electron and transmission electron microscopy confirmed that the precipitate consists of polymer particles (<1 μm) surrounded by the GO sheets. Compression molding of the precipitate yields a polymer nanocomposite with the GO organized into a regularly spaced 3D network which percolates at 0.2 wt % GO. Simple thermal reduction of the GO sheets dispersed in PMMA at relatively low temperature (210 °C) achieved electrical conductivity higher than 10−2 S/m at 0.4 wt % of GO. Parallel dielectric and rheological characterization demonstrated that the thermal reduction is a quite fast process without significant degradation of the polymer. The study should open up new opportunities in the design of GO-based polymer nanocomposites. [less ▲]

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See detailApport de la musculation en sport collectifamateur : exemple du handball féminin
Jidovtseff, Boris ULg; Frère, Pauline; Theunissen, Catherine ULg

in Science & Sports (in press)

Introduction. — The aim of the study was to verify, in a non-professional handball female, if theintroduction of two short workouts per week during all season has a positive impact on muscularperformance ... [more ▼]

Introduction. — The aim of the study was to verify, in a non-professional handball female, if theintroduction of two short workouts per week during all season has a positive impact on muscularperformance.Methods. — Eighteen female playing handball at the top Belgian level were monitored duringthe complete season. Ten of these girls (‘‘Muscu’’ group) achieved, in addition to their usualtraining, two short (30 minutes) strength training sessions weekly. The other (‘‘Control’’ group)followed the usual training, without any strength training session. A battery of tests (leg power,arm power, vertical jump, sprint, throwing, flexibility) has been set up to four times during theseason to follow up muscular performance.Results. — According to the literature, the ‘‘Control’’ group showed any change in performanceduring the year. By contrast, ‘‘Muscu group results demonstrated that the short strength trai-ning program was efficient, with significant improvements in leg power (P < 0.005) and sprint(P < 0.05) tests. Increase in vertical jump was very close to the level of significance (P = 0.06).Arms power did not improve but appeared to be superior in the ‘‘Muscu’’ group in comparisonwith ‘‘Control’’ at the end of the season, which was not the case at the beginning.© 2013 Elsevier Masson SAS. All rights reserved. [less ▲]

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See detailLe Fonds Hubert Nyssen à l'Université de Liège
Durand, Pascal ULg; Habrand, Tanguy ULg

in Histoires littéraires (in press)

Biographie croisée de l'écrivain et de l'éditeur Hubert Nyssen et présentation détaillée du Fonds d'archives déposé par lui au Centre d'Etude du Livre Contemporain de l'Université de Liège.

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See detailL’evidence-based practice à portée des orthophonistes : intérêt des recommandations pour la pratique clinique
Maillart, Christelle ULg; Durieux, Nancy ULg

in Rééducation Orthophonique (in press)

La démarche evidence-based practice (EBP) littéralement « pratique basée sur des preuves », a pour objectif d’aider le clinicien à optimiser ses choix thérapeutiques en s’appuyant sur des données ... [more ▼]

La démarche evidence-based practice (EBP) littéralement « pratique basée sur des preuves », a pour objectif d’aider le clinicien à optimiser ses choix thérapeutiques en s’appuyant sur des données objectives issues de la recherche tout en tenant compte de la situation clinique. Néanmoins, la méthodologie complète de récolte et d’analyse des données est complexe et chronophage, ce qui est un frein réel pour son application en clinique. Pour remédier à cela, des synthèses scientifiquement motivées, appelées des recommandations de pratique clinique (RPC) ou guidelines, se développent et jouent alors un rôle essentiel pour l’actualisation des connaissances des professionnels. Cet article s’intéresse particulièrement aux recommandations pour la pratique clinique et au rôle qu’elles peuvent jouer dans la sensibilisation des cliniciens au recours à une démarche EBP. [less ▲]

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See detailA New Three Object Triangulation Algorithm for Mobile Robot Positioning
Pierlot, Vincent ULg; Van Droogenbroeck, Marc ULg

in IEEE Transactions on Robotics (in press)

Positioning is a fundamental issue in mobile robot applications. It can be achieved in many ways. Among them, triangulation based on angles measured with the help of beacons is a proven technique. Most of ... [more ▼]

Positioning is a fundamental issue in mobile robot applications. It can be achieved in many ways. Among them, triangulation based on angles measured with the help of beacons is a proven technique. Most of the many triangulation algorithms proposed so far have major limitations. For example, some of them need a particular beacon ordering, have blind spots, or only work within the triangle defined by the three beacons. More reliable methods exist; however, they have an increasing complexity or they require to handle certain spatial arrangements separately. In this paper, we present a simple and new three object triangulation algorithm, named ToTal, that natively works in the whole plane, and for any beacon ordering. We also provide a comprehensive comparison between many algorithms, and show that our algorithm is faster and simpler than comparable algorithms. In addition to its inherent efficiency, our algorithm provides a very useful and unique reliability measure, assessable anywhere in the plane, which can be used to identify pathological cases, or as a validation gate in Kalman filters. [less ▲]

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