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See detailParents d'un enfant en rémission de cancer: Prédicteurs psychologiques et cognitifs de l'intolérance à l'incertitude dans le maintien des inquiétudes et dans l'orientation de l'attention sélective
Vander Haegen, Marie ULiege

Doctoral thesis (2017)

In spite of core medical advances realized these last years, the childhood cancer remains a distressing experience for the child and their parents. The cancer history is rarely linear and takes place into ... [more ▼]

In spite of core medical advances realized these last years, the childhood cancer remains a distressing experience for the child and their parents. The cancer history is rarely linear and takes place into a space and a particular time when marks are shaken. The stake in paediatric oncology is double: that the child is cured without side effects and that the child and parents cross this experience without psychological destabilization. When the cancer survivorship is diagnosed, new challenges are expecting for the child and parents. Indeed, the childhood cancer survivorship is considered as integrated into the field of chronic diseases where the factor of uncertainty coexists and requires continuous adjustments of the child and parents. Therefore, it is a period of progressive rehabilitation where the stake is double: control the relapse and treatments’ late effects (or aftereffects) of the child and allow the child and parents, “to pursue their life the most normally possible”. The survivorship experience is thus intense transforming deeply “the psyche” of the child and parents. Since a few years, empirical studies examine the child adjustment and parents in the course of treatments. These reveal namely some adaptation difficulties, anxious and depressive symptoms. However, the social/family support and the problem-focused coping seem positively moderate the distress intensity. Studies investigated the cancer survivorship were mainly centred on the child and showed its effects on the child’s psychological adjustment (e.g. anxiety, depression). Nevertheless, the distress intensity could be positively influenced in particular by social and family support factors. The thorough examination of the literature observes that studies rarely include the parent and that no study has associated the factor of uncertainty with the vulnerability factor of intolerance of uncertainty. The originality of this research lives in the interest centred on the concept of intolerance of uncertainty [IU] and its effects on the psychological and cognitive adjustment among parents of a child cancer survivor. This quasi-experimental, quantitative, longitudinal research combines standardized questionnaires (IUS, NPOQ, CAQ, Mini-CERTS, HADS, and WW-II), questionnaires created for the needs of the study (sociodemographic, QIPS-R15, OncoMed and SomaOnco) and two neuropsychological tasks (classic Stroop and emotional Stroop). The sample consists of 61 parents (45 mothers and 16 fathers) of a child cancer survivor (from 4 to 6 years of survivorship without relapse and with mainly a neoadjuvant chemotherapy during treatments). Three months later, parents returned to the laboratory and completed the same questionnaires and performed Stroop tasks (with the exception of words which are modified). The time was decided with medical teams. It seemed relevant to retest parents when the medical assessment of the child was completed in order to observe if the distress decreased. Besides, this time was sufficient to avoid memory biases. The first aim of this research is the study of parental distress. The proposed hypothesis is the existence of anxious, depressive, somatic symptoms and worries. Results showed that 70 % of parents had anxious symptoms (HADS), 39 % presented depressive symptoms (HADS), 14 % suffered from somatic symptoms (SomaOnco) and 70 % had worries (QIPS-R15). Results from moderation analyses indicated no main effect of gender, remission time, and couple on distress criteria (except the interaction of these three factors for worries). These results demonstrated the existence of a significant distress within the sample but also the presence of additional factors which may influence the parental adjustment. The second aim is the examination of IU and its maintaining factors (i.e. positive beliefs about worry, cognitive avoidance, negative attitude towards problems and repetitive thinking (ruminations)). The advanced hypothesis is the causal track between IU and its maintaining factors. Results of IUS questionnaire demonstrated on average that parents had a low tolerance of uncertainty (64 % of the sample) and that 60 % of the sample were located in a moderated to severe profile of generalized anxiety disorder (GAD). Concerning IU’s maintaining factors, results of NPOQ, CAQ, WW-II and Mini-CERTS questionnaires highlighted the existence of positive beliefs towards worry (WW-II: problem solving and positive trait of personality) and cognitive avoidance (CAQ: distraction and thought suppression). Results of regressions bear out the predictor status of IU for the development of its maintaining factors. Nevertheless, protective factors arose from analyses, particularly an effective problem orientation and the use of concrete experiential thinking mode (CET; Mini-CERTS), which could protect them from a deterioration of the mood (e.g. depression). These results indicated the negative influence of IU on the psychological adjustment, the protective effect of a positive attitude orientation and the use of CET among parents. The third aim concerns the study of cognitive processes in terms of orientation of selective attention and cognitive inhibition. The proposed hypothesis is the orientation of selective attention towards threat into the IU context. Results seem to indicate a longer latency for negative and coloured words during Stroop tasks. The within-group regression and mediation results reveal the mediating effect of IU between the orientation of selective attention towards threat and distress components (i.e. anxious, depressive, somatic symptoms and worries). Moreover, depressive symptoms contribute to predicting the coloured word latency (cognitive inhibition process). These results seem to demonstrate the negative influence of the IU on the orientation of selective attention and depressive symptoms for cognitive inhibition. Lastly, the fourth aim is the analysis of IU stability and its maintaining factors over time. The proposed hypothesis is the stability of IU and its maintaining factors because IU is considered as a feature of the personality. At the second assessment (n=51/N=61), three significant differences were observed. The first difference concerns a decrease for anxiety symptoms with nevertheless a score being located in the pathological border. The second difference relates to a decrease for the cognitive avoidance with a score situated in the superior border of the standards. Lastly, an increase for somatic symptoms level was observed at the second assessment. Concerning IU, results indicate no significant change. Parents who presented a high level of IU at the first assessment kept it at the second assessment. This observation is also true for parents who had a low level of IU. These results supported the hypothesis of IU stability and its maintaining factors over time. Overall, results emphasize the implication of IU in the psychological distress among parents and its effect on cognitive processes of the orientation of selective attention towards threatening words (negative words). This research brings out the necessity to identify parents who are at risk for IU (and its maintaining factors) at an early stage of the cancer management in order to avoid excessive worries and the use of dysfunctional strategies over time. Furthermore, this research allows future clinical avenues for the development of follow-up tools in paediatric oncology, and recommends the parents’ psychological adjustment follow-up in close collaboration with medical teams. Implications of this research are discussed into the "general discussion" part of the thesis. [less ▲]

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See detailMOOC et classes inversées ou cours magistraux. Données générales .
Hanzen, Christian ULiege

Scientific conference (2017, November 11)

Cette conférence avait pour objectif de conscientiser des enseignants universitaires aux potentialités offertes par les MOOC et la classe inversée pour favoriser l'apprentissage des apprenants.

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See detailCharles de Méan, le Papinien liégeois
Lagasse, Benoît ULiege

Doctoral thesis (2017)

La thèse tend à déterminer si Charles de Méan, surnommé le Papinien liégeois, mérite ce surnom signifiant qu'il a été le plus grand jurisconsulte qu'ait connu la principauté de Liège. Pour ce faire, elle ... [more ▼]

La thèse tend à déterminer si Charles de Méan, surnommé le Papinien liégeois, mérite ce surnom signifiant qu'il a été le plus grand jurisconsulte qu'ait connu la principauté de Liège. Pour ce faire, elle tend à étudier une partie de son oeuvre majeure, les Observationes et res judicatae ad jus civile Leodiensium, Romanorum, aliarumque gentium canonicum et feudale. Par ailleurs, la thèse met en exergue la spécificité du droit liégeois et tend à déterminer les influcences subies par ce droit. [less ▲]

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See detailArpenter l’Histoire pour mieux maîtriser la temporalité de l’histoire en classe du secondaire. Etude de cas (2013-2015) et programme de recherche (2017-)
Jadoulle, Jean-Louis ULiege

Scientific conference (2017, November 01)

Cette étude de cas tente d’évaluer l’impact d’un dispositif d’enseignement sur la maitrise de la temporalité historienne ; ce dispositif est conçu sous la forme de parcours diachroniques successifs ou « ... [more ▼]

Cette étude de cas tente d’évaluer l’impact d’un dispositif d’enseignement sur la maitrise de la temporalité historienne ; ce dispositif est conçu sous la forme de parcours diachroniques successifs ou « parcours chronologiques emboités » (Jadoulle, 2008, 2015). Elle a été conduite en Belgique francophone avec un enseignant et compare, à deux années d’intervalle, la maitrise de la temporalité historienne par des élèves de 4e année (16 ans). Ceux-ci composent deux cohortes : la première a été évaluée en 2013 et avait bénéficié d’un mode d’enseignement chronologique de la période qui va de l’arrivée de Colomb en Amérique au Congrès de Vienne (1815) ; la seconde a été évaluée en 2015 et avait bénéficié d’un enseignement de cette même période, par le même professeur, mais sous la forme de plusieurs « parcours chronologiques emboités » , chacun de ces parcours faisant ensuite l’objet d’une mise en perspective synchronique avec les autres. Les résultats indiquent que le dispositif dit des « parcours chronologiques emboités » améliore la maitrise de la temporalité historienne. Ils améliorent en particulier la capacité à établir une succession ou une diachronie, à identifier des changements et des continuités et à repérer des synchronies. [less ▲]

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See detailProblématiser le présent pour apprendre le passé. A propos des "questions socialement vives"
Jadoulle, Jean-Louis ULiege

Scientific conference (2017, October 26)

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See detailPour une « didactique de l’enquête » : quels fondements, quels outils ?
Jadoulle, Jean-Louis ULiege

Scientific conference (2017, October)

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See detailEffects of defatting combined or not to heating of Jatropha curcas kernel meal on feed intake and growth performance in broiler chickens and chicks in Senegal
Nesseim, Thierry ULiege; Dieng, Abdoulaye; Mergeai, Guy ULiege et al

in Tropicultura (2017), 35(3), 149-157

Jatropha curcas is a tropical drought-resistant plant belonging to the Euphorbiaceae family that has gained importance for the production of biodiesel. The kernel of the seed contains approximately 55 ... [more ▼]

Jatropha curcas is a tropical drought-resistant plant belonging to the Euphorbiaceae family that has gained importance for the production of biodiesel. The kernel of the seed contains approximately 55% lipid in dry matter and the meal obtained could be an exceptional source of protein for family poultry farming, after treatments to remove toxic and anti-nutritional compounds. The ingestion and the growth performance of J. curcas kernel meal (JKM), obtained after partial physico chemical de-oiling combined or not with heating was evaluated in broiler chickens and chicks. Sixty unsexed broiler chickens, 30 day-old, divided into three groups as well as twenty broiler chicks, 1 day-old, divided into two groups were obtained for two experiments. In experiment 1, jatropha kernel was de-oiled and incorporated into a control fattening feed at 40 and 80g/kg (diets 4JKM1 and 8JM1). In experiment 2, jatropha kernel meal obtained in experiment 1 was heat treated and incorporated into a growing diet at 80g/kg (diet 8JKM2). Daily dietary intakes as well as weight gain of the animals were affected by the incorporation of jatropha kernel meal in the ration. In experiment 1, average daily feed intake (ADFI1) of 139.2, 55.2 and 23.4g/day/animal and also average daily weight gain (ADWG1) of 61.9, 18.5 and -7.7g/animal were obtained respectively for the groups fed with diets 0JKM1, 4JKM1 and 8JKM1. In experiment 2, Average daily feed intake (ADFI2) of 18.7 and 3.1g/day/animal and also average daily weight gain (ADWG2) of 7.1 and 1.9g/animal were obtained respectively for the groups fed with diets 0JKM2 and 8JKM2. In both experiment, feed conversion ratio (FCR) was also affected by the dietary treatments and the overall mortality rate showed an increase according to levels of jatropha kernel meal in diet. Keywords: broiler chickens, broiler chicks, Jatropha curcas, ingestion, growth performance [less ▲]

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See detailA spectral characterization of nonlinear normal modes
Cirillo, G. I.; Mauroy, A.; Renson, Luc ULiege et al

in Journal of Sound and Vibration (2016), 377

This paper explores the relationship that exists between nonlinear normal modes (NNMs) defined as invariant manifolds in phase space and the spectral expansion of the Koopman operator. Specifically, we ... [more ▼]

This paper explores the relationship that exists between nonlinear normal modes (NNMs) defined as invariant manifolds in phase space and the spectral expansion of the Koopman operator. Specifically, we demonstrate that NNMs correspond to zero level sets of specific eigenfunctions of the Koopman operator. Thanks to this direct connection, a new, global parametrization of the invariant manifolds is established. Unlike the classical parametrization using a pair of state-space variables, this parametrization remains valid whenever the invariant manifold undergoes folding, which extends the computation of NNMs to regimes of greater energy. The proposed ideas are illustrated using a two-degree-of-freedom system with cubic nonlinearity. © 2016 Elsevier Ltd [less ▲]

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See detailNumerical computation of nonlinear normal modes in mechanical engineering
Renson, Luc ULiege; Kerschen, Gaëtan ULiege; Cochelin, B.

in Journal of Sound and Vibration (2016), 364

This paper reviews the recent advances in computational methods for nonlinear normal modes (NNMs). Different algorithms for the computation of undamped and damped NNMs are presented, and their respective ... [more ▼]

This paper reviews the recent advances in computational methods for nonlinear normal modes (NNMs). Different algorithms for the computation of undamped and damped NNMs are presented, and their respective advantages and limitations are discussed. The methods are illustrated using various applications ranging from low-dimensional weakly nonlinear systems to strongly nonlinear industrial structures. © 2015 Elsevier Ltd. [less ▲]

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See detailEnforcing linear dynamics through the addition of nonlinearity
Habib, G.; Grappasonni, C.; Kerschen, Gaëtan ULiege et al

in Conference Proceedings of the Society for Experimental Mechanics Series (2016), 1

The current trend of developing more slender structures is increasing the importance of nonlinearities in engineering design, which, in turn, gives rise to complicated dynamical phenomena. In this study ... [more ▼]

The current trend of developing more slender structures is increasing the importance of nonlinearities in engineering design, which, in turn, gives rise to complicated dynamical phenomena. In this study, we evidence the somewhat paradoxical result that adding purposefully nonlinearity to an already nonlinear structure renders the behavior more linear. Isochronicity, i.e., the invariance of natural frequencies with respect to oscillation amplitude, and the force-displacement proportionality are two key properties of linear systems that are lost for nonlinear systems. The objective of this research is to investigate how these properties can be enforced in a nonlinear system through the addition of nonlinearity. To this end, we exploit the nonlinear normal modes theory to derive simple rules, yet applicable to real structures, for the compensation of nonlinear effects. The developments are illustrated using numerical experiments on a cantilever beam possessing a geometrically nonlinear boundary condition. © The Society for Experimental Mechanics, Inc. 2016. [less ▲]

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See detailChatter mitigation using the nonlinear tuned vibration absorber
Habib, G.; Kerschen, Gaëtan ULiege; Stepan, Gabor

in Proceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics (2016)

A passive vibration absorber, termed the nonlinear tuned vibration absorber (NLTVA), is designed for the suppression of chatter vibrations. Differently from most passive vibration absorbers proposed in ... [more ▼]

A passive vibration absorber, termed the nonlinear tuned vibration absorber (NLTVA), is designed for the suppression of chatter vibrations. Differently from most passive vibration absorbers proposed in the literature, the NLTVA comprises both a linear and a nonlinear restoring force. Its linear characteristics are tuned in order to optimize the stability properties of the machining operation, while its nonlinear properties are chosen in order to control the bifurcation behavior of the system and guarantee robustness of stable operation. In this work, the NLTVA is applied to turning machining. [less ▲]

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See detailPerformance comparison between a nonlinear energy sink and a linear tuned vibration absorber for broadband control
Gourc, E.; Elce, L. D.; Kerschen, Gaëtan ULiege et al

in Conference Proceedings of the Society for Experimental Mechanics Series (2016), 1

The performance of a linear tuned vibration absorber (LTVA) and a nonlinear energy sink (NES) for the vibration mitigation of an uncertain linear primary system is investigated. An analytic tuning rule ... [more ▼]

The performance of a linear tuned vibration absorber (LTVA) and a nonlinear energy sink (NES) for the vibration mitigation of an uncertain linear primary system is investigated. An analytic tuning rule for the LTVA when the primary system contains uncertainty is derived. The behavior of the linear system coupled to the NES is analyzed theoretically. A tuning methodology for the NES in the deterministic as well as for the uncertain case is presented. © The Society for Experimental Mechanics, Inc. 2016. [less ▲]

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See detailOn the Encoding of Allative and Recipient in the Greek Diachrony
Georgakopoulos, Athanasios ULiege

in Kutscher, Silvia; Werning, Daniel (Eds.) On Ancient Grammars of Space. Linguistic Research on the Expression of Spatial Relations and Motion in Ancient Languages (2014)

This article focuses on the Greek ALLATIVE preposition eis, and in particular on the semantic extension from the ALLATIVE to the RECIPIENT. Based on diachronic data, it is argued that the emergence of the ... [more ▼]

This article focuses on the Greek ALLATIVE preposition eis, and in particular on the semantic extension from the ALLATIVE to the RECIPIENT. Based on diachronic data, it is argued that the emergence of the ALLATIVE–RECIPIENT polysemy is not directly connected to the loss of the dative case, as often implied. Under the theoretical framework provided by cognitive linguistic studies, the mechanism which underlies this polysemy of eis is investigated. Furthermore, it is shown that in the course of time, Greek does not follow one single pattern with regard to the encoding of these two senses. Finally, the article continues the debate about the extension pathways that may give rise to the RECIPIENT. [less ▲]

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See detailOtto Dix - Nietzsche, 1912
Laruelle, Anne-Sophie ULiege

in Duchesne, Jean-Patrick (Ed.) L'art dégénéré selon Hitler. La vente de Lucerne 1939 (2014)

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See detailThe meaning of khrónos in Ancient Greek: a diachronic perspective
Georgakopoulos, Athanasios ULiege; Piata, Anna

in Hart, Christopher (Ed.) Selected papers from UK-CLA (Cognitive Linguistics Association) Meetings (2012)

The present paper deals with the semantics of the polysemous lexeme khrónos across various stages in Ancient Greek. By endorsing a Principled Polysemy approach to lexical meaning, we investigate the ... [more ▼]

The present paper deals with the semantics of the polysemous lexeme khrónos across various stages in Ancient Greek. By endorsing a Principled Polysemy approach to lexical meaning, we investigate the emergence of the first attested meaning of khrónos and the ensuing development of its other senses to be distinguished on the grounds of a set of criteria (i.e., meaning extension, grammatical features and concept elaboration). The data used in the study stem from a tailor-made special-purpose historical corpus constructed by the authors and cover three different stages of Greek, from Homeric to the 1st c. B.C. The methodology used is both quantitative and qualitative. The findings of the corpus analysis suggest that there is an association between the diachronic stage and the occurrence of khrónos. As expected, our data show that the increase in the frequency of the lexeme under examination seems to correlate with the diffusion of its meanings, which appear to increase abruptly from the first stage to the second. Furthermore, the findings of the qualitative analysis of khrónos indicate that its earliest attested meaning is Duration from which all other meanings are historically derived. This finding lends support from a diachronic perspective to Duration being the Sanctioning Sense of khrónos in the Greek language. Finally, a crucial finding of this study is that in the early stages of Greek, unlike Modern Greek, Duration instantiated equally two distinct but parallel lexical patterns, which manifest a conceptualization of Duration either as distance or as quantity. In conceptual terms, this entails that initially Ancient Greek afforded two equivalent mental representations of Duration. [less ▲]

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