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See detailInfluence des stéréotypes dans l'évaluation neuropsychologique
Marquet, Manon ULg; Adam, Stéphane ULg

in Amieva, Hélène; Bellin, Catherine; Maillet, Didier (Eds.) L’Evaluation Neuropsychologique : De la Norme à l’Exception (in press)

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See detailEstimating the out-of-sample predictive ability of trading rules: a robust bootstrap approach
Hambuckers, julien ULg; Heuchenne, Cédric ULg

in Journal of Forecasting (in press)

In this paper, we provide a novel way to estimate the out-of-sample predictive ability of a trading rule. Usually, this ability is estimated using a sample splitting scheme, true out-of-sample data being ... [more ▼]

In this paper, we provide a novel way to estimate the out-of-sample predictive ability of a trading rule. Usually, this ability is estimated using a sample splitting scheme, true out-of-sample data being rarely available. We argue that this method makes a poor use of the available data and creates data mining possibilities. Instead, we introduce an alternative .632 bootstrap approach. This method enables to build in- sample and out-of-sample bootstrap datasets that do not overlap but exhibit the same time dependencies. We show in a simulation study that this technique drastically reduces the mean squared error of the estimated predictive ability. We illustrate our methodology on IBM, MSFT and DJIA stock prices, where we compare 11 trading rules speci cations. For the considered datasets, two different filter rule specifications have the highest out-of-sample mean excess returns. However, all tested rules cannot beat a simple buy-and-hold strategy when trading at a daily frequency. [less ▲]

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See detailIs the sword moss (Bryoxiphium) a preglacial Tertiary relict?
Patino, J.; Goffinet, B.; Sim-Sim, M.A. et al

in Molecular Phylogenetics & Evolution (in press)

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See detailBiochemical characterization of the oil of durum wheat germ (Tunisian variety)
Kammoun, Maroua; Rassâa, Neila; Mejri-Gaïda, Myriam et al

in Journal of New Sciences (in press)

The wheat germ oil may constitute an alternative to the misuse of this cereal grain resource. The Tunisian exploitation is limited, at present, in the human and animal feed in the grain form, straw or ... [more ▼]

The wheat germ oil may constitute an alternative to the misuse of this cereal grain resource. The Tunisian exploitation is limited, at present, in the human and animal feed in the grain form, straw or some transformed products. For the purpose of characterization, the wheat germ oil has been extracted by Soxhlet apparatus from a Tunisian variety of durum wheat (Maali) based on the hexane as a solvent. An analysis by gas chromatography (GC) was then performed to identify and quantify the fatty acids of the oil. Then, the oil has submitted to a second chromatography analysis in liquid phase (HPLC) to quantify the tocopherols. The most important fatty acids constituting have been the two polyunsaturated acids linoleic acid C18:2 (OMEGA 6) and the gamma acid- linoleic C18:3 : 58.24 % and 4.19 % respectively; and the acid monounsaturated oleic acid C18:1 ( 24.49 %) but also some saturated acid: palmitic acid C16:0 with ( 19.50 % ), and the stearic acid C18:0 (1.29%). For this variety of Tunisian durum wheat, the wheat germ oil contains, in addition, 80.27 mg / 100g of α- tocopherols (vitamin E). The wheat germ oil extracted from the Tunisian variety 'Maali' has proved rich in vitamin E and omega-6 ; a better valorisation on the nutritional or pharmaceutical plan is to this title recommended. [less ▲]

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See detailI glossari e gli inventari tre-quattrocenteschi: piccoli grandi tesori di lessico (e cultura) materiale
Aresti, Alessandro ULg

in La capsula del tempo. Atti del VII Convegno Internazionale dell'AIBA (Associazione degli Italianisti nei Balcani) (in press)

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See detailDynamic single-cell analysis of Saccharomyces cerevisiae under process perturbation: comparison of different methods for monitoring the intensity of population heterogeneity
Delvigne, Frank ULg; Baert, Jonathan ULg; Gofflot, Sébastien et al

in Journal of Chemical Technology & Biotechnology (in press)

BACKGROUND: Single cell biology has attracted a lot of attention these past few years and has led to numerous fundamental results pointing out the heterogeneity of clonal cell populations. In this context ... [more ▼]

BACKGROUND: Single cell biology has attracted a lot of attention these past few years and has led to numerous fundamental results pointing out the heterogeneity of clonal cell populations. In this context, microbial phenotypic heterogeneity under bioprocessing conditions needs to be further investigated. In this study, yeast based processes have been investigated by using on-line flow cytometry in combination with a fluorescent transcriptional reporter (GFP) and viability fluorescence tags (propidium iodide, PI). Methods aiming at expressing the dispersion of these fluorescence tags among the yeast populations have been investigated for different bioreactor operating conditions. RESULTS: Yeast viability was determined on the basis of PI uptake. Segregation between PI negative and positive subpopulations could be efficiently quantified on the basis of the mean-to-median ratio or the amplitude of the interquartile range. On the other hand, the same quantification could not be made for the segregation occurring at the level of GFP synthesis. Indeed, when cells were exposed to sub-lethal or mild stresses (such as in scale-down reactors) two GFP subpopulations could be visualized by real-time FC, but quantification by one of the above-mentioned methods was not possible. CONCLUSIONS: Yeast population heterogeneity was observed in representative bioreactor operating conditions. Difficulties for the determination of segregation at the level of GFP synthesis point out the fact that one needs to understand the segregation mechanisms for the applied fluorescent reporters, to judge whether simple mathematical tools may be applied or if more sophisticated computational tools are needed for the quantification of the microbial population segregation. [less ▲]

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See detailDynamics of Environmental Migration
Gemenne, François ULg; Jäger, Jill; Entzinger, Han

Book published by Palgrave Macmillan (in press)

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See detailGünter Grass and his translators: from a collaborative dynamic to a controlling apparatus?
Letawe, Céline ULg

in Cordingley, Anthony; Frigau Manning, Céline (Eds.) Collaborative Translation: from the Renaissance to the Digital Age (in press)

Entre 1978 et 2013, Günter Grass a réuni ses traducteurs autour de chacun de ses romans pour qu’ils puissent discuter avec lui et entre eux des problèmes de traduction. L’expérience fascine, mais elle ... [more ▼]

Entre 1978 et 2013, Günter Grass a réuni ses traducteurs autour de chacun de ses romans pour qu’ils puissent discuter avec lui et entre eux des problèmes de traduction. L’expérience fascine, mais elle pose aussi de nombreuses questions. A partir de correspondances, de protocoles et d’enregistrements conservés aux archives et de comparaisons entre l’original de Günter Grass et plusieurs traductions, il a été possible non seulement de retracer le processus, mais aussi d’en évaluer le résultat, pour ainsi mieux cerner les enjeux multiples liés à ces séminaires de traducteurs. A côté de leur finalité avouée (l’amélioration de la qualité des traductions), ils participent à un système de contrôle plus large et contribuent à légitimer les traductions et à en faire la publicité, mais ils ont aussi pour effet de créer une dynamique entre les traducteurs et de leur donner davantage de visibilité. [less ▲]

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See detailState Created Barriers to Exit - The Example of the Acquisition of Alstom by General Electric
Petit, Nicolas ULg

in Competition Policy International (in press)

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See detailSur les pas des hommes qui ont vu l’ours. La conservation de la faune sauvage, un travail réel.
Denayer, Dorothée ULg; Mougenot, Catherine ULg; Collard, Damien

in Natures Sciences Sociétés (in press)

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See detailLe socio-écosystème : dynamiques institutionnelles et interdisciplinarité.
Denayer, Dorothée ULg; Couvet, Denis

in Interdisciplinarités entre Natures et Sociétés. (in press)

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See detailLes animaux comme révélateurs et passeurs de frontières.
Roué, Marie; Manceron, Vanessa; Denayer, Dorothée ULg et al

in Interdisciplinarités entre Natures et Sociétés. (in press)

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See detailConvective drying behavior of sawdust-sludge mixtures in a fixed bed
Li, Jie; Fraikin, Laurent ULg; Salmon, Thierry ULg et al

in Drying Technology (in press)

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See detailStructural analysis of monometallic ruthenium–arene complexes using ion mobility mass spectrometry, collision-induced dissociation, and density functional theory
Cserwinska, Izabella; Far, Johann ULg; Kune, Christopher ULg et al

in Journal of the Chemical Society. Dalton Transactions (in press)

Ion mobility mass spectrometry (IM-MS) and collision-induced dissociation (CID) techniques were used to investigate the influence of the phosphine ligand on the physicochemical properties of [RuCl2(p ... [more ▼]

Ion mobility mass spectrometry (IM-MS) and collision-induced dissociation (CID) techniques were used to investigate the influence of the phosphine ligand on the physicochemical properties of [RuCl2(p-cymene)(PCy3)] (1), [RuCl2(p-cymene)-(PPh3)] (2), and [RuCl2(p-cymene)(PTA)] (3) in the gas phase (PTA is 1,3,5-triaza-7-phosphaadamantane). Electrospray ionization of complexes 1 and 2 led to the corresponding [RuCl(p-cymene)(PR3)]+ ions via the dissociation of a chlorido ligand, whereas RAPTA-C (3) afforded two molecular ions by in-source oxidation ([RuIIICl2(p-cymene)(PTA)]+) or protonation ([RuCl2(p-cymene)(PTA+H)]+). Control experiments showed that the balance between these two ionization paths was strongly influenced by the nature of the solvent used for infusion. Collision cross sections (CCSs) of the four molecular ions accurately reflected the variations of steric bulk inferred from the Tolman steric parameters (θ) of the phosphine ligands. Moreover, DFT calculations combined with a model based on the kinetic theory of gases (the trajectory method of the IMoS software) afforded reliable CCS predictions. The almost two times higher dipole moment of [RuCl2(p-cymene)-(PTA+H)]+ (μ = 13.75 D) compared to [RuIIICl2(p-cymene)(PTA)]+ (μ = 7.18 D) was held responsible for increased ion-induced dipole interactions with a polarizable drift gas such as N2. Further experiments with He and CO2 confirmed that increasing the polarizability of the buffer gas improved the separation between the two molecular ions derived from complex 3. The fragmentation patterns of complexes 1–3 were determined by CID. The sequence of collision voltages at which 50% of a precursor ion dissociates (V50) recorded for the molecular ions derived from compounds 1–3 was in good agreement with simple electronic considerations based on the donor strength of the phosphine ligand. Thus, the CCS and V50 parameters used to determine the shape and stability of ionic species in the gas phase are complementary to the Tolman steric and electronic parameters (θ and TEP) commonly used by organometallic chemists in condensed phases. [less ▲]

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See detailSalicylic acid differently impacts ethylene and polyamine synthesis in the glycophyte Solanum lycopersicum and the wild-related halophyte Solanum chilense exposed to mild salt stres
Gharbi, Emna; Martinez, Juan Pablo; Benahmed, Hela et al

in Physiologia Plantarum (in press)

This study aimed to determine the effects of exogenous application of salicylic acid on the toxic effects of salt in relation to ethylene and polyamine synthesis, and to correlate these traits with the ... [more ▼]

This study aimed to determine the effects of exogenous application of salicylic acid on the toxic effects of salt in relation to ethylene and polyamine synthesis, and to correlate these traits with the expression of genes involved in ethylene and polyamine metabolism in two tomato species differing in their sensitivity to salt stress, Solanum lycopersicum cv Ailsa Craig and its wild salt-resistant relative Solanum chilense. [less ▲]

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See detailBattista Guarino, 'Sermone del cane e del cavallo'. Un texte inconnu à la cour des Este
Valenti, Gianluca ULg; Van den Abeele, Baudouin

in Actes du Colloque international Chevaux, chiens, faucons. L’art vétérinaire antique et médiéval à travers les sources écrites, archéologiques et iconographiques (in press)

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See detailLes Grecs ont-ils étudié le latin ? Quelques témoignages littéraires datant du Haut-Empire
Rochette, Bruno ULg

in Sans, Benoît; Foubert, Frédéric; Vanhalme, Charlotte (Eds.) Hommages à Ghislaine Viré (in press)

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See detailPromoting Competition at the Digital Age with an Application to Belgium
Copée, Pierre ULg; Gautier, Axel ULg; Lefevre, Mélanie ULg

in Crew, Michael; Brennan, Timothy (Eds.) The Future of the Postal Sector in a Digital World (in press)

In this paper, we develop a fully-fledged postal market model to assess the extent of competition in the mail market in a context of declining mail volumes due to e-substitution. Our focus will be on the ... [more ▼]

In this paper, we develop a fully-fledged postal market model to assess the extent of competition in the mail market in a context of declining mail volumes due to e-substitution. Our focus will be on the Belgian market situation that is interesting for at least two reasons. First, the homogenous nature of the country implies that the extent of the entrant's market coverage will be either limited to the few very densely populated areas or large covering the whole country at the exception of the few very sparely populated areas. Second, because strong licensing requirements -including coverage constraints- are imposed on competing postal operators and they may constitute barrier to entry. Our model allows us to estimate the extent of entry, the cost of meeting the licensing requirements for potential entrants and the impact of entry on the cost of the universal service. [less ▲]

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