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See detailDo Mutual Fund Investors Still Trust Standard Risk-Adjusted Performance Measures?
Sougné, Danielle ULg; Bodson, Laurent ULg; Cave, Arnaud

E-print/Working paper (2012)

We study the relationship between the past performance of mutual funds and their capital flows (i.e. their subscriptions and redemptions). Testing the most traditional risk-adjusted performance measures ... [more ▼]

We study the relationship between the past performance of mutual funds and their capital flows (i.e. their subscriptions and redemptions). Testing the most traditional risk-adjusted performance measures, we identify the ones which best explain the flows of US equity mutual funds. [less ▲]

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See detailDo Mutual Fund Investors Still Trust Standard Risk-Adjusted Performance Measures?
Bodson, Laurent ULg; Cave, Arnaud; Sougné, Danielle ULg

E-print/Working paper (2012)

We study the relationship between the risk-adjusted performance of mutual funds and their money flows (i.e. their subscriptions and redemptions). Testing the most traditional risk-adjusted performance ... [more ▼]

We study the relationship between the risk-adjusted performance of mutual funds and their money flows (i.e. their subscriptions and redemptions). Testing the most traditional risk-adjusted performance measures, we identify the ones which best explain the flows of equity, bond or mixed funds. The risk-adjusted performance measures which attract the most the attention from investors are the Information ratios (mono- and multi-factor), the M-squared and the Sharpe ratios (traditional Sharpe ratios and Sharpe MVaR). We may conclude that fund managers who want to maximize their AuM (and, if applicable, increase their AuM based fees) must mainly focus their efforts on improving these standard performance measures. Furthermore, we also demonstrate that the performance-flow relationship is concave then convex. Indeed, amongst the funds with a negative performance, those achieving the worst results are affected by disproportionately high net outflows whereas, on the opposite side of the spectrum, the most successful funds experience much higher capital inflows. [less ▲]

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See detailDo new methods of investigation allow faster assessment of drugs efficacy in osteoarthritis?
Abadie, Eric ULg; Avouac, B.; Bouvenot, G. et al

in Osteoporosis International (2003, November), 14(Suppl. 7), 2

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See detailDo patient with osteoporotic hip fracture recover their initial health-related quality of life?
Ethgen, Olivier ULg; Tancredi, Annalisa ULg; Jacques, J. et al

in Osteoporosis International (2003, November), 14(Suppl. 7), 66

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See detailDo patients with osteoporotic hip fracture recover their initial health-related quality of life?
Ethgen, Olivier ULg; Tancredi, Annalisa ULg; Jacques, Jessica ULg et al

in Osteoporosis International (2004, May), 15(Suppl.1), 50

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See detailDo Personality Traits Modulate the Effect of Emotional Visual Stimuli on Auditory Information Processing?
Mardaga, Solange; Hansenne, Michel ULg

in Journal of Individual Differences (2009), 30(1), 28-34

Several lines of evidence attest robust relationships between personality dimensions and emotions, including cognitive aspect of emotion. More particularly, many studies reported strong relationships ... [more ▼]

Several lines of evidence attest robust relationships between personality dimensions and emotions, including cognitive aspect of emotion. More particularly, many studies reported strong relationships between extraversion, the behavioral activation system (BAS), and the cognitive processing of positive information, on the one hand, and between neuroticism, the behavioral inhibition system (BIS), and the processing of negative information, on the other hand. Recently, DePascalis, Awari, Matteucci, and Mazzocco (2005) reported that personality traits modulated the effect of the emotional visual stimuli on the mismatch negativity (MMN). The aim of the present study was to replicate these data and extend them to other personality dimensions. Auditory MMN was recorded in normal subjects simultaneously to the presentation of emotional pictures selected as neutral, positive, or negative from the International Affective Picture System, and presented in randomized order. The results support the recent finding that personality (namely, BIS and harm avoidance) modulates the influence of emotional (negative) context on auditory information processing. The present findings suggest that the modulation by personality of change detection in the unattended environment as a function of context valence is limited to unpleasant context. [less ▲]

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See detailDo Photobiont Switch and Cephalodia Emancipation Act as Evolutionary Drivers in the Lichen Symbiosis? A Case Study in the Pannariaceae (Peltigerales)
Magain, Nicolas ULg; Sérusiaux, Emmanuël ULg

in PLoS ONE (2014), 9(2), 89876

Lichen symbioses in the Pannariaceae associate an ascomycete and either cyanobacteria alone (usually Nostoc; bipartite thalli) or green algae and cyanobacteria (cyanobacteria being located in dedicated ... [more ▼]

Lichen symbioses in the Pannariaceae associate an ascomycete and either cyanobacteria alone (usually Nostoc; bipartite thalli) or green algae and cyanobacteria (cyanobacteria being located in dedicated structures called cephalodia; tripartite thalli) as photosynthetic partners (photobionts). In bipartite thalli, cyanobacteria can either be restricted to a well-delimited layer within the thallus (‘pannarioid’ thalli) or spread over the thallus that becomes gelatinous when wet (‘collematoid’ thalli). We studied the collematoid genera Kroswia and Physma and an undescribed tripartite species along with representatives of the pannarioid genera Fuscopannaria, Pannaria and Parmeliella. Molecular inferences from 4 loci for the fungus and 1 locus for the photobiont and statistical analyses within a phylogenetic framework support the following: (a) several switches from pannarioid to collematoid thalli occured and are correlated with photobiont switches; the collematoid genus Kroswia is nested within the pannarioid genus Fuscopannaria and the collematoid genus Physma is sister to the pannarioid Parmeliella mariana group; (b) Nostoc associated with collematoid thalli in the Pannariaceae are related to that of the Collemataceae (which contains only collematoid thalli), and never associated with pannarioid thalli; Nostoc associated with pannarioid thalli also associate in other families with similar morphology; (c) ancestors of several lineages in the Pannariaceae developed tripartite thalli, bipartite thalli probably resulting from cephalodia emancipation from tripartite thalli which eventually evolved and diverged, as suggested by the same Nostoc present in the collematoid genus Physma and in the cephalodia of a closely related tripartite species; Photobiont switches and cephalodia emancipation followed by divergence are thus suspected to act as evolutionary drivers in the family Pannariaceae. [less ▲]

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See detailDo pictures of faces, and which ones, capture attention in the inattentional blindness paradigm?
Devue, Christel ULg; Laloyaux, Cédric ULg; Feyers, Dorothée ULg et al

in Perception (2009), 38(4), 552568

Faces and self-referential materials (eg the own name) are more likely to capture attention in the inattentional blindness (IB) paradigm than others stimuli. This effect is presumably due to the meaning ... [more ▼]

Faces and self-referential materials (eg the own name) are more likely to capture attention in the inattentional blindness (IB) paradigm than others stimuli. This effect is presumably due to the meaning of these stimuli rather than to their familiarity (Mack and Rock 1998). IB has mostly been investigated with schematic stimuli in previous work. In the present study, the generalisability of this finding was tested using photographic stimuli. In support to the view that faces constitute a special category of stimuli, it was found that pictures of faces resisted more to IB than pictures of common objects (Experiment 1) or than pictures of inverted faces (Experiment 2). In a third experiment, the influence of face familiarity and identity (ie the participant’s own face, a friend’s face and an unknown face) on IB rates was evaluated. Unexpectedly, no differential resistance to blindness across these three kinds of faces was found. In conclusion, picture of faces attracted attention more than pictures of objects or inverted faces in the IB paradigm. However, this effect was not dependent on face familiarity or identity. [less ▲]

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See detailDO PLACEBO BASED VALIDATION STANDARDS MIMIC REAL BATCH PRODUCTS BEHAVIOUR? CASE STUDIES
Bouabidi, A.; Talbi, M.; Bouklouze, A. et al

in Journal of Pharmaceutical & Biomedical Analysis (2011), 55

Analytical methods validation is a mandatory step to evaluate the ability of developed methods to provide accurate results for their routine application. Validation usually involves validation standards ... [more ▼]

Analytical methods validation is a mandatory step to evaluate the ability of developed methods to provide accurate results for their routine application. Validation usually involves validation standards or quality control samples that are prepared in placebo or reconstituted matrix made of a mixture of all the ingredients composing the drug product except the active substance or the analyte under investigation. However, one of the main concerns that can be made with this approach is that it may lack an important source of variability that come from the manufacturing process. The question that remains at the end of the validation step is about the transferability of the quantitative performance from validation standards to real authentic drug product samples. In this work, this topic is investigated through three case studies. Three analytical methods were validated using the commonly spiked placebo validation standards at several concentration levels as well as using samples coming from authentic batch samples (tablets and syrups). The results showed that, depending on the type of response function used as calibration curve, there were various degrees of differences in the results accuracy obtained with the two types of samples. Nonetheless the use of spiked placebo validation standards was showed to mimic relatively well the quantitative behaviour of the analytical methods with authentic batch samples. Adding these authentic batch samples into the validation design may help the analyst to select and confirm the most fit for purpose calibration curve and thus increase the accuracy and reliability of the results generated by the method in routine application. [less ▲]

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See detailDo plant species and climate warming influence nitrification and ammonia oxidiser community structure
Malchair, Sandrine ULg; Carnol, Monique ULg

in Belgian Biodiversity Platform, 2007 Conference: Biodiversity and Climate Change, 21-22 May 2007, Brussels (2007)

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See detail'Do plant species and climate warming influence nitrification and ammonia oxidiser community structure
Malchair, Sandrine ULg; Carnol, Monique ULg

in 11th International symposium on microbial ecology (ISME-11) 'The Hidden Powers – Microbial Communities in Action', Vienna, Austria, August 20-25, 2006, Book of Abstracts (2006)

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See detailDo polyamines increase the antioxidant capacity of hyperhydric shoots ?
Franck, Thierry ULg; Tabart, Jessica ULg; Kevers, Claire ULg et al

in 4th international workshop - cost action FA0605 - Book of abstracts - Limassol 17-19 November (2011)

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See detailDo Raven’s Colored Progressive Matrices function in the same way in typical and clinical populations? Insights from the intellectual disability field
Facon, Bruno; Magis, David ULg; Nuchadee, Marie-Laure et al

in Intelligence (2011), 39

Standardized tests are used widely in comparative studies of clinical populations, either as dependent or control variables. Yet, one cannot always be sure that the test items measure the same constructs ... [more ▼]

Standardized tests are used widely in comparative studies of clinical populations, either as dependent or control variables. Yet, one cannot always be sure that the test items measure the same constructs in the groups under study. In the present work, 460 participants with intellectual disability of undifferentiated etiology and 488 typical children were tested using Raven’s Colored Progressive Matrices (RCPM). Data were analyzed using binomial logistic regression modeling designed to detect differential item functioning (DIF). Results showed that 12 items out of 36 function differentially between the two groups, but only 2 items exhibit at least moderate DIF. Thus, a very large majority of the items have identical discriminative power and difficulty levels across the two groups. It is concluded that RCPM can be used with confidence in studies comparing participants with and without intellectual disability. In addition, it is suggested that methods for investigating internal bias of tests used in cross-cultural, cross-linguistic or cross gender comparisons should also be regularly employed in studies of clinical populations, particularly in the field of developmental disability, to show the absence of systematic measurement error (i.e. DIF) affecting item responses. [less ▲]

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See detailDo Raven’s Colored Progressive Matrices function the same way in typical and clinical populations?
Nuchadee, Marie-Laure; Facon, Bruno; Magis, David ULg et al

Conference (2010, June)

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See detailDo recent West African rainfall variations really impact the livestock in the Sahel?
Ozer, Pierre ULg

Conference (2013, November 14)

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See detailDo results of the EORTC dummy run predict quality of radiotherapy delivered within multicentre clinical trials?
Fairchild, A.; Collette, L.; Hurkmans, C. W. et al

in European Journal of Cancer (2012), 48(17), 3232-3239

Objective: The European Organisation for the Research and Treatment of Cancer (EORTC) Radiation Oncology Group (ROG) has performed radiotherapy quality assurance (QA) in clinical trials, including dummy ... [more ▼]

Objective: The European Organisation for the Research and Treatment of Cancer (EORTC) Radiation Oncology Group (ROG) has performed radiotherapy quality assurance (QA) in clinical trials, including dummy runs (DR) and individual case reviews (ICR), since 1991. We investigated the influence of DR results on subsequent QA and patient outcomes. Methods: EORTC ROG studies were reviewed for DR inclusion, QA and mature clinical outcomes. A DR was classified as a failure if corrections necessitated re-submission. ICR were graded as acceptable, minor or major deviation overall. Fisher's exact test characterised potential correlations and the Mantel-Haenszel statistic quantified pooled odds ratios (OR). Results: DR and ICR data were available from 12 and 3 protocols, respectively. The proportion of institutions successful at first DR attempt varied per trial from 5.6% to 68.8%. Participants were 3.2 times more likely to pass at first attempt after previous DR participation (p = 0.0002). Pooled OR for an acceptable ICR was 1.69 (p = 0.06) for institutions successful at DR first attempt. The effect of DR participation was not significantly correlated with patient outcome in the trial available for analysis. Conclusions: Implementing QA measures in ROG clinical trials should ensure optimal radiotherapy delivery. Centres which previously participated in a DR were significantly more likely to be successful at subsequent QA procedures. © 2012 Elsevier Ltd. All rights reserved. [less ▲]

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See detailDo root-emitted volatile organic compounds attract wireworms?
Barsics, Fanny ULg; Latine, Rémi ULg; Gfeller, Aurélie ULg et al

in Communications in Agricultural and Applied Biological Sciences (2012), 77(3), 561-567

Wireworms are the soil dwelling larvae of click beetles (Coleoptera: Elateridae). Their importance as crop pests increases since the efficient chemical means to control them cannot be considered anymore ... [more ▼]

Wireworms are the soil dwelling larvae of click beetles (Coleoptera: Elateridae). Their importance as crop pests increases since the efficient chemical means to control them cannot be considered anymore. Therefore, many integrated pest management strategies have been investigated in the past few years. Most of them rely on the understanding of the ecology of the click beetles during their whole life cycle. We focus our work on the chemical ecology of wireworms, more precisely on the root-emitted volatile organic compounds (VOCs) that might intervene in the food-searching process of the larvae by helping them to find a suitable host-plant or by acting as key factors in the belowground defence mechanism of the plant. Here, we present our first results of dual-choice orientation tests in olfactometric pipes. Wireworms (Agriotes sordidus Illiger) were submitted individually to a variety of olfactory baits ranging from entire barley roots (Hordeum vulgare L. var. Quench) to isolated VOCs identified as part of the emitting profile. The latter was described thanks to HS-SPME samplings and GC-MS analysis, for roots grown in the exact same conditions as for the olfactometric experimentations with entire roots. Most of the experimentations gave significant results. When confronted to volatiles emitted by entire roots, wireworms significantly orientated towards the bait (χ²-goodness-of-fit test, χ²=8, P-value=0.005). This result allowed us to follow up with the same device and to progressively vary the nature of the baits. Our protocol should be used for other plant-wireworm species combinations. Our results should be taken into account in varietal selection, in crop rotation, or in trapping systems aiming at the reduction of the populations of wireworms. [less ▲]

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