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See detailIssues in measuring habitat fragmentation.
Bogaert, Jan ULg

Scientific conference (2000)

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See detailIssues in performing a network meta-analysis.
Senn, S; Gavini, F; Magrez, D et al

in Statistical Methods in Medical Research (2013), 22

The example of the analysis of a collection of trials in diabetes consisting of a sparsely connected network of 10 treatments is used to make some points about approaches to analysis. In particular ... [more ▼]

The example of the analysis of a collection of trials in diabetes consisting of a sparsely connected network of 10 treatments is used to make some points about approaches to analysis. In particular various graphical and tabular presentations, both of the network and of the results are provided and the connection to the literature of incomplete blocks is made. It is clear from this example that is inappropriate to treat the main effect of trial as random and the implications of this for analysis are discussed. It is also argued that the generalisation from a classic random-effect meta-analysis to one applied to a network usually involves strong assumptions about the variance components involved. Despite this, it is concluded that such an analysis can be a useful way of exploring a set of trials. [less ▲]

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See detailIssues in the design of student assessment instrument for Pisa 2000
Wu, M.; Monseur, Christian ULg

Conference (2002, August)

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See detailIssues related to protein fermentation in the intestines of pigs
Bindelle, Jérôme ULg

Scientific conference (2014, March 27)

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See detailissus de l'immigration
Vandeninden, Elise ULg

in Durand, Pascal (Ed.) Les Nouveaux mots du pouvoir. Abécédaire critique. (2007)

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See detailItaliano @ impresa
Campitelli, F.; Lucchini, Silvia ULg; Morrone, F. et al

Learning material (2001)

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See detailL'italiano in Europa: usi e funzioni in due paesi europei
Moreno, Paola ULg; Di Salvo, Margherita

Conference (2011, September 27)

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See detailL'Italie à Paris: Leopardi dans «Le Mousquetaire»
Curreri, Luciano ULg

in Durand, Pascal; Mombert, Sarah (Eds.) Entre presse et littérature : «Le Mousquetaire», journal d'Alexandre Dumas (2009)

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See detailLes Italiens de Belgique : une communauté sans leaders ?
Martiniello, Marco ULg

in Les Italiens de Belgique, Actes de la 4ème semaine d’information sur l’évolution de la société italienne. Italia Oggi (1994)

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See detailItaly : Racism in Paradise ?
Martiniello, Marco ULg

in Monk, R.-C. (Ed.) Taking Sides : Clashing Views on Controversial Issues in Race and Ethnicity (1994)

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See detailItaly : the Late Discovery of Immigration
Martiniello, Marco ULg

in Tränhardt, D. (Ed.) Europe : a New Immigration Continent (1992)

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See detailItaly : two Perspectives. Racism in Paradise ?
Martiniello, Marco ULg; Kazim, P.

in Race & Class (1991), 32(3), 79-89

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See detailItem familiarity and controlled associative retrieval in Alzheimer's disease: An fMRI study
Genon, Sarah ULg; Collette, Fabienne ULg; Feyers, Dorothée ULg et al

in Cortex : A Journal Devoted to the Study of the Nervous System & Behavior (2013), 49

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See detailItem familiarity and controlled associative retrieval in Alzheimer’s disease: an fMRI study.
Genon, Sarah ULg; Collette, Fabienne ULg; Feyers, Dorothée ULg et al

in Proceedings of the Amsterdam Memory Slam 2012 (2012, August 30)

Alzheimer’s disease (AD) is characterised by altered recollection function, with impaired controlled retrieval of associations. In contrast, familiarity-based memory for individual items may sometimes be ... [more ▼]

Alzheimer’s disease (AD) is characterised by altered recollection function, with impaired controlled retrieval of associations. In contrast, familiarity-based memory for individual items may sometimes be preserved in early stages of the disease. This is the first study that directly examines whole brain regional activity engaged during one core aspect of the recollection function: associative controlled episodic retrieval (CER), contrasted to item familiarity in AD patients. Cerebral activity related to associative CER and item familiarity in AD patients and healthy controls (HC) was measured with functional magnetic resonance imaging during a word-pair recognition task to which the process dissociation procedure was applied. Some patients had null CER estimates (AD-), whereas others did show some CER abilities (AD+) although significantly less than HC. In contrast, familiarity estimates were equivalent in the three groups. In AD+ like in controls, associative CER activated the inferior precuneus/posterior cingulate cortex (PCC). However, during associative CER, functional connection between this region and the hippocampus, the inferior parietal and the dorsolateral prefrontal cortex was significantly higher in HC than in AD+. In the three groups, item familiarity was related to activation along the intraparietal sulcus (IPS). In conclusion, whereas the preserved automatic detection of an old item (without retrieval of accurate word association) is related to a parietal activation centred on the IPS, the inferior precuneus/PCC supports associative CER ability in AD patients as in HC. However, AD patients have deficient functional connectivity during associative CER suggesting that residual recollection function in these patients might be impoverished by lack of some recollection-related aspects such as autonoetic quality, episodic details and verification. [less ▲]

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See detailItem familiarity and controlled associative retrieval in Alzheimer’s disease: An fMRI study.
Genon, Sarah ULg; Collette, Fabienne ULg; Feyers, Dorothée ULg et al

in Frontiers in Human Neuroscience (2012)

Alzheimer’s disease (AD) is characterised by altered recollection function, with impaired controlled retrieval of associations. In contrast, familiarity-based memory for individual items may sometimes be ... [more ▼]

Alzheimer’s disease (AD) is characterised by altered recollection function, with impaired controlled retrieval of associations. In contrast, familiarity-based memory for individual items may sometimes be preserved in the early stages of the disease. This is the first study that directly examines whole brain regional activity during one core aspect of the recollection function: associative controlled episodic retrieval (CER), contrasted to item familiarity in AD patients. Cerebral activity related to associative CER and item familiarity in AD patients and healthy controls (HC) was measured with functional magnetic resonance imaging during a word-pair recognition task to which the process dissociation procedure was applied. Some patients had null CER estimates (AD–), whereas others did show some CER abilities (AD+), although significantly less than HC. In contrast, familiarity estimates were equivalent in the three groups. In AD+, as in controls, associative CER activated the inferior precuneus/posterior cingulate cortex (PCC). However, during associative CER, functional connection between this region and the hippocampus, the inferior parietal and dorsolateral prefrontal cortex (DLPFC) was significantly higher in HC than in AD+. In all three groups, item familiarity was related to activation along the intraparietal sulcus (IPS). In conclusion, whereas the preserved automatic detection of an old item (without retrieval of accurate word association) is related to parietal activation centred on the IPS, the inferior precuneus/PCC supports associative CER ability in AD patients, as in HC. However, AD patients have deficient functional connectivity during associative CER, suggesting that the residual recollection function in these patients might be impoverished by the lack of some recollection-related aspects such as autonoetic quality, episodic details and verification. [less ▲]

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See detailAn item ixture model to detect differential item functioning
Frederickx, Sofie; Tuerlinckx, Francis; De Boeck, Paul et al

Conference (2009, July)

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See detailItem purification does not always improve DIF detection: a counter-example with Angoff’s Delta plot
Magis, David ULg; Facon, Bruno

in Educational & Psychological Measurement (2013), 73

Item purification is an iterative process that is often advocated as improving the identification of items affected by differential item functioning (DIF). With test-score based DIF detection methods ... [more ▼]

Item purification is an iterative process that is often advocated as improving the identification of items affected by differential item functioning (DIF). With test-score based DIF detection methods, item purification iteratively removes the items currently flagged as DIF from the test scores in order to get purified sets of items, unaffected by DIF. The purpose of this paper is to highlight that item purification is not always useful and that a single run of the DIF method may return equally suitable results. Angoff’s Delta plot is considered as a counter-example DIF method, with a recent improvement to the derivation of the classification threshold. Several possible item purification processes may be defined with this method, and all of them are compared through a simulation study and a real data set analysis. It appears that none of these purification processes clearly improves the Delta plot performance. A tentative explanation is drawn from the conceptual difference between the modified Delta plot and the other traditional DIF methods. [less ▲]

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