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Peer Reviewed
See detailIndirect photometric detection of amino acids in capillary zone electrophoresis
Bechet, Isabelle; Hubert, Philippe ULg; Crommen, Jacques ULg

in Journal de Pharmacie de Belgique (1991), 46

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See detailIndirect quadrangular mesh generation and validation of curved finite elements
Johnen, Amaury ULg

Doctoral thesis (2016)

Among the different types of 3D finite element meshes, hexahedral meshes present properties that can be highly desirable, such as alignment with physical features or a lower computational cost. For this ... [more ▼]

Among the different types of 3D finite element meshes, hexahedral meshes present properties that can be highly desirable, such as alignment with physical features or a lower computational cost. For this reason and despite the maturity of the tetrahedral mesh generators, hexahedral mesh generation has always been a prolific research domain. Yet, there exists currently no robust algorithm capable of generating conformal all-hexahedral meshes with prescribed input size field on any arbitrary geometry. One difficulty that remains is that there exists no method to robustly assert that a hexahedron is valid. Indeed, linear hexahedra can be folded (tangled) in the same way than curvilinear tetrahedra. This thesis addresses two subjects. First, two original quadrangular mesh generation techniques are investigated, with the aim to generalize them to 3D. Both are indirect methods and thus consider the problem of combining pairs of triangles of an initial input triangular mesh. The first technique, called Blossom-Quad, computes the optimal solution of this problem with respect to a given quality criterion. As for any indirect method, the quality of the solution strongly depends on the location of the nodes in the initial triangular mesh. The generalization to 3D is however unclear and a second technique is investigated. This one aims at computing a near-optimal solution by using a look-ahead tree technique. The corresponding algorithm allows tuning the quality of the final mesh by choosing the depth of the tree as a parameter. This technique gives a promising way forward, especially as it is directly applicable in 3D. The second subject concerns the development of a method that permits to compute, with respect to any prescribed tolerance, the extrema of Jacobian-based quantities defined on finite elements of any order and type. Applied to the Jacobian determinant, this method allows to assert the validity of any (curvi-)linear finite element. This method is also applied to a quality measure that quantifies the pointwise anisotropy of the elements. Besides being very attractive for hexahedral mesh generation, this method is especially useful for the analysis of curvilinear finite element meshes. It can moreover be an important component of optimization techniques for achieving robustness. [less ▲]

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See detailIndirect sensors in Biotechnology.
Rikir, R.; Anselme, P.; Godefroid, J. et al

Poster (1987, December)

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Peer Reviewed
See detailIndirect Uv Detection of Hydrophilic Ionized Compounds in Reversed-Phase Liquid Chromatography by Use of a Uv-Absorbing Ion of the Same Charge
Crommen, Jacques ULg; Herné, Patrick ULg

in Journal of Pharmaceutical & Biomedical Analysis (1984), 2(2), 241-53

Ion-pair reversed-phase liquid chromatographic systems have been developed that allow the detection and quantitation of low amounts of hydrophilic ionized substances, which otherwise display little or no ... [more ▼]

Ion-pair reversed-phase liquid chromatographic systems have been developed that allow the detection and quantitation of low amounts of hydrophilic ionized substances, which otherwise display little or no capability for optical detection. The mobile phase contains a UV-absorbing ion of the same charge and hydrophobic character as the samples, most often together with a hydrophobic counter-ion to give the samples suitable retention; the stationary phase consists of octadecylsilica. Chromatograms featuring two system peaks are usually obtained, and these give rise to some deviations from the usual response pattern. In the present work the influence on retention and detection sensitivity of the non-absorbing counter-ion, the UV-absorbing ion and the uncharged organic modifier have been studied systematically. Principles for optimizing the detector response by changing the mobile phase composition have been deduced. Examples of applications of the indirect detection technique to the analysis of hydrophilic compounds of pharmaceutical and biological interest, such as amino acids, water-soluble vitamins and piperazine, are presented. [less ▲]

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See detailIndiskrete Zeugenschaft: Die Betrogene als strukturell peinvolle Lektüreerfahrung
Pontzen, Alexandra ULg

in Gutjahr, Ortrud (Ed.) Thomas Mann. Freiburger literaturpsychologische Gespräche. Jahrbuch für Literatur und Psychoanalyse (2012)

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See detailIndispensable aux apprentissages de l’élève, le feedback
Piéron, Maurice; Cloes, Marc ULg; Delfosse, Catherine

in Bui-Xhuan, G.; Gleyse, J. (Eds.) Enseigner l’éducation physique et sportive (1993)

Le feedback fut défini comme une intervention pédagogique dépendant de la réponse motrice d'un ou de plusieurs élèves et ayant pour objet de fournir une information relative à l'acquisition ou à la ... [more ▼]

Le feedback fut défini comme une intervention pédagogique dépendant de la réponse motrice d'un ou de plusieurs élèves et ayant pour objet de fournir une information relative à l'acquisition ou à la réalisation d'une habileté motrice. Intuitivement, l'enseignant attribue beaucoup d'importance à la rétroaction qu'il va fournir à l'élève qu'il dirige. Il s'agit d'une relation personnalisée avec ce dernier, prenant pour point de départ sa prestation et les activités dans lesquelles il est engagé. out ceci prend place dans un contexte de recherche d'amélioration de la prestion de l'élève. ... [less ▲]

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See detailIndividu et culture selon Hegel
Seba, Jean-Renaud ULg

Conference given outside the academic context (2005)

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See detailL’individu et le citoyen dans la société moderne
Potvin, Maryse; Fournier, Bernard ULg; Couture, Yves

Book published by Presses de l’Université de Montréal (2000)

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See detailL'individu, avenir de la sociologie ? Réflexion critique sur l'individualisme méthodologique et la sociologie de l'action à partir des travaux de R. Boudon
Jacquemain, Marc ULg

Master's dissertation (1987)

The text shows that the "methodological individualism" of Boudon cannot be sutained without an impict assumption about "ontological" individualism : in some sense, any individualist theory of explanation ... [more ▼]

The text shows that the "methodological individualism" of Boudon cannot be sutained without an impict assumption about "ontological" individualism : in some sense, any individualist theory of explanation assumes that, to some extent, the individual is more "real" than the social. [less ▲]

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Peer Reviewed
See detailIndividual and combined effects of dosages of azoxystrobin and epoxiconazole in wheat
Moreau, Jean-Marc; Bodson, Bernard ULg; Maraite, H. et al

in Communications in Agricultural and Applied Biological Sciences (2005, May 10), 70(3), 91-99

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See detailIndividual and interacting effects of pCO2 and temperature on Emiliania huxleyi calcification: Study of the calcite production, the coccolith morphology and the coccosphere size
De Bodt, Caroline; Van Oostende, Nicolas; Harlay, Jérôme ULg et al

in Biogeosciences (2010), 7

The impact of ocean acidification and increased water temperature on marine ecosystems, in particular those involving calcifying organisms, has been gradually recognised. We examined the individual and ... [more ▼]

The impact of ocean acidification and increased water temperature on marine ecosystems, in particular those involving calcifying organisms, has been gradually recognised. We examined the individual and combined effects of increased pCO2 (180 ppm V CO2, 380 ppm V CO2 and 750 ppm V CO2 corresponding to past, present and future CO2 conditions, respectively) and temperature (13°C and 18°C) during the calcification phase of the coccolithophore E. huxleyi using batch culture experiments. We showed that the cell abundance-normalized particulate organic carbon concentration (POC) increased from the present to the future CO2 treatments. A significant effect of pCO2 and of temperature on calcification was found, manifesting itself in a lower cell abundance-normalized particulate inorganic carbon (PIC) content as well as a lower PIC:POC ratio at future CO2 levels and at 18°C. Coccosphere-sized particles showed a size reduction trend with both increasing temperature and CO2 concentration. The influence of the different treatments on coccolith morphology was studied by categorizing SEM coccolith micrographs. The number of well-formed coccoliths decreased with increasing pCO2 while temperature did not have a significant impact on coccolith morphology. No interacting effect of pCO2 and temperature was observed on calcite production, coccolith morphology or on coccosphere size. Finally, our results suggest that ocean acidification might have a larger adverse impact on coccolithophorid calcification than surface water warming. [less ▲]

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See detailIndividual decisions in placenta increta and percreta: a case series.
CHANTRAINE, Frédéric ULg; NISOLLE, Michelle ULg; PETIT, Philippe ULg et al

in Journal of Perinatal Medicine (2012), 40(3), 265-70

Abstract Objective: Placenta increta or percreta is an uncommon pathology, sometimes associated with high maternal morbidity. Its prevalence increases proportionally to the number of cesarean sections ... [more ▼]

Abstract Objective: Placenta increta or percreta is an uncommon pathology, sometimes associated with high maternal morbidity. Its prevalence increases proportionally to the number of cesarean sections. This study analyzed the changes of our management strategy to devise treatment guidelines for this uncommon disorder. Materials and methodology: Between 2005 and 2011, 10 cases of placenta increta or percreta were managed at our university hospital maternity department. Results: Among the 10 cases, seven were diagnosed prenatally. Two patients were diagnosed early, at 14 and 17 weeks of gestational age, and their pregnancies were terminated. Five had hysterectomies during the intrapartum period, and despite attempted conservative treatment for the two others, hysterectomy proved necessary 2 months postpartum because of intrauterine infections. Seven of the 10 women had hysterectomies. Conclusion: Prenatal diagnosis of placenta increta or percreta is essential to plan the delivery in a competent tertiary care center. The decision to perform a cesarean hysterectomy or leave the placenta in situ for spontaneous delivery is based on the extent of infiltration, the patient's hemodynamic status, and her desire to remain fertile. The high-risk of infection and severe hemorrhage must not be overlooked should conservative treatment be chosen. This situation requires prolonged close monitoring. [less ▲]

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See detailIndividual differences in cognitive representations of action influence the activation of goal concepts
Belayachi, Sanaa ULg; Van der Linden, Martial ULg

in Acta Psychologica (2013), 142(2), 259-264

Goal representations play a key role in various psychological processes, including behavioral regulation, self-perception and social understanding. Research on cognitive representations of action has ... [more ▼]

Goal representations play a key role in various psychological processes, including behavioral regulation, self-perception and social understanding. Research on cognitive representations of action has identified individual differences in the general tendency to construe actions in terms of their goal (vs. movement parameters), which can be reliably assessed with the Behavior Identification Form (BIF). The aim of the present study was to examine how individual differences in action identification, as measured by the BIF, affect online processing of action in a laboratory study. The main results showed that the level of action identification predicted participants' performance in a task designed to implicitly assess people's automatic processing of action regarding goal features. We discussed the possible role of impaired goal processing in psychological dysfunctions. [less ▲]

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See detailIndividual differences in the non-image frroming effects of light on human sleep.
Chellappa, Sarah Laxhmi ULg; Viola, Antoine; Schmidt, Christina ULg et al

in Journal of Sleep Research (2014, September)

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See detailIndividual differences in the phenomenology of mental time travel: The effect of vivid visual imagery and emotion regulation strategies
D'Argembeau, Arnaud ULg; Van der Linden, Martial ULg

in Consciousness & Cognition (2006), 15(2), 342-350

It has been claimed that the ability to remember the past and the ability to project oneself into the future are intimately related. We sought support for this proposition by examining whether individual ... [more ▼]

It has been claimed that the ability to remember the past and the ability to project oneself into the future are intimately related. We sought support for this proposition by examining whether individual differences in dimensions that have been shown to affect memory for past events similarly influence the experience of projecting oneself into the future. We found that individuals with a higher capacity for visual imagery experienced more visual and other sensory details both when remembering past events and when imagining future events. In addition, individuals who habitually use suppression to regulate their emotions experienced fewer sensory, contextual, and emotional details when representing both past and future events, while the use of reappraisal had no effect on either kind of events. These findings are consistent with the view that mental time travel into the past and into the future relies on similar mechanisms. [less ▲]

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See detailIndividual distance-independent girth increment model for Douglas-fir in southern Belgium
Monty, Arnaud ULg; Lejeune, Philippe ULg; Rondeux, Jacques ULg

in Ecological Modelling (2008), 212(3-4), 472-479

An individual distance-independent girth increment model for pure stands of Douglas-fir (Pseudotsuga menziesii (MIRB.) FRANCO), comprising two equations, is presented. The data used to fit the model were ... [more ▼]

An individual distance-independent girth increment model for pure stands of Douglas-fir (Pseudotsuga menziesii (MIRB.) FRANCO), comprising two equations, is presented. The data used to fit the model were collected from 1007 trees in 42 plots installed in regularly stocked and even-aged stands located in Wallonia (southern Belgium). Both equations predict girth increment from individual girth, dominant height, basal area per hectare, stand mean girth and variables linked to site fertility. These last variables are the site index H50 in the first equation, and a combination of mean annual rainfall and altitude in the second. The coefficient of determination ranges from 0.434 to 0.481 and the root mean square error ranges from 0.7857 to 0.8194 cm year(-1). Estimated increments of 224 Douglas-fir trees in 12 different and independent stands were used to validate the model, which is expected to provide reliable predictions for most of the pure Douglas-fir stands located in the study area. (c) 2007 Elsevier B.V. All rights reserved [less ▲]

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See detailIndividual effect of equine digital morphometric parameters on joint kinetics: a sensitivity analysis
Noble, Prisca ULg; Collin, Bernard ULg; Denoix, Jean-Marie et al

in ISB proceeding (2011), 155(2), 77-82

Detailed reference viewed: 10 (1 ULg)