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See detailL-band and C-band studies of African volcanic areas
Wauthier, Christelle ULg; Oyen, A.; Marinkovic, P. et al

in Proc. of Geoscience and Remote Sensing Symposium, 2009 IEEE International, IGARSS 2009 , July 13-17 2009, Cape Town, Africa (2009)

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See detailThe L-curve for optimal smoothing
Frasso, Gianluca ULg

E-print/Working paper (n.d.)

The L-curve, adopted for the selection of the regularization parameter in ill-posed inverse problems, shows a parametric plot of the residuals vs the penalty. The corner of the L indicates the right ... [more ▼]

The L-curve, adopted for the selection of the regularization parameter in ill-posed inverse problems, shows a parametric plot of the residuals vs the penalty. The corner of the L indicates the right amount of regularization. The L-curve is easy to compute and works surprisingly well also for smoothing data with correlated noise. We present the theoretical background, an alternative criterion to nd the corner automatically, and applications to real data. [less ▲]

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See detailL. Jäger, "Ferdinand de Saussure zur Einführung"
Cigana, Lorenzo ULg

in Cahier Ferdinand de Saussure (2012)

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See detailThe L1 major capsid protein of HPV16 differentially modulates APC trafficking according to the vaccination or natural infection context.
Herman, Ludivine ULg; Hubert, Pascale ULg; Herfs, Michael ULg et al

in European Journal of Immunology (2010), 40(11), 3075-84

Human papillomavirus (HPV) infection, particularly type 16, is causally associated with cancer of the uterine cervix. The progression of cervical lesions suggests that viral antigens are not adequately ... [more ▼]

Human papillomavirus (HPV) infection, particularly type 16, is causally associated with cancer of the uterine cervix. The progression of cervical lesions suggests that viral antigens are not adequately presented to the immune system. The aim of this study was to determine whether HPV16 viral particles can influence the trafficking of human DC/Langerhans cells (LC), either by direct interactions with DC or following incubation with human normal keratinocytes that are in close contact with LC in the squamous epithelium. We first demonstrated that HPV16 L1 major capsid protein, when self-assembled into virus-like particles (VLP), is able to induce in DC an over-expression of CXC receptor 4 (CXCR4) via the activation of the NF-kappaB signaling pathway and to enhance DC motility in the presence of CXCL12, suggesting an ability to migrate towards lymph nodes. We also showed that conditioned media of HPV16 VLP-treated keratinocytes induce a lower LC migration than those from untreated keratinocytes and that prostaglandin E2 (PGE(2)), detected in HPV16 VLP-treated keratinocyte supernatants, may reduce LC recruitment into the squamous epithelium. Taken together, our data demonstrate that HPV16 VLP may differentially regulate the immune protective response according to their target cells. [less ▲]

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See detailL1-based compression of random forest models
Joly, Arnaud ULg; Schnitzler, François ULg; Geurts, Pierre ULg et al

in 20th European Symposium on Artificial Neural Networks (2012, April)

Random forests are effective supervised learning methods applicable to large-scale datasets. However, the space complexity of tree ensembles, in terms of their total number of nodes, is often prohibitive ... [more ▼]

Random forests are effective supervised learning methods applicable to large-scale datasets. However, the space complexity of tree ensembles, in terms of their total number of nodes, is often prohibitive, specially in the context of problems with very high-dimensional input spaces. We propose to study their compressibility by applying a L1-based regularization to the set of indicator functions defined by all their nodes. We show experimentally that preserving or even improving the model accuracy while significantly reducing its space complexity is indeed possible. [less ▲]

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See detailL1-based compression of random forest models
Joly, Arnaud ULg; Schnitzler, François ULg; Geurts, Pierre ULg et al

in Proceeding of the 21st Belgian-Dutch Conference on Machine Learning (2012, May 24)

Random forests are effective supervised learning methods applicable to large-scale datasets. However, the space complexity of tree ensembles, in terms of their total number of nodes, is often prohibitive ... [more ▼]

Random forests are effective supervised learning methods applicable to large-scale datasets. However, the space complexity of tree ensembles, in terms of their total number of nodes, is often prohibitive, specially in the context of problems with very high-dimensional input spaces. We propose to study their compressibility by applying a L1-based regularization to the set of indicator functions defined by all their nodes. We show experimentally that preserving or even improving the model accuracy while significantly reducing its space complexity is indeed possible. [less ▲]

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See detailL1-protein in incipient lymphocyte-depleted graft-versus-host disease. Expression in keratinocytes and coexpression with Factor XIIIa in dermal cells
Pierard, Gérald ULg; Tassoudji, Nazli ULg; Arrese Estrada, Jorge ULg et al

in Turkish Journal of Dermatology = Dermatopatoloji Dergisi (1998), 7

With the introduction of effective immunosuppressive regimens some cutaneous rashes following bone marrow transplant may appear histologically unremarkable. We report three cases of cyclosporin-abated ... [more ▼]

With the introduction of effective immunosuppressive regimens some cutaneous rashes following bone marrow transplant may appear histologically unremarkable. We report three cases of cyclosporin-abated cutaneous graft-versus-host reaction (GVHR) where the most straightful histologic clue was the epidermal L1-protein (calprotectin) expression revealed by a positive immunolabelling using the Mac 387 antibody. The epidermis looked otherwise normal and inflammatory cells were scant in the dermis. The expression of calprotectin by keratinocytes occurred early in cutaneous GVHR. In addition, CD45RO-positive T memory lymphocytes were exceedingly rare in the dermis while a few Mac 387-positive monocytes coexpressed Factor XIIIa immunoreactivity. Hyperplasia of the Factor XIIIa-positive dendrocytic population was obvious. Calprotectin and Factor XIIIa immunolagellings should be regarded as a diagnostic adjunct in lymphocyte-depleted cutaneous GVHR. Calprotectin positivity of the epidermis is indicative although not specific for such condition. However, its combination with a low lymphocytes/monocytes ratio in the dermis which is enriched in plup dendrocytes is almost diagnostic. [less ▲]

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See detailL2MA-2 Langage oral, langage écrit, mémoire, attention
Chevrie-Muller, Claude; Maillart, Christelle ULg; Simon, Anne-Marie et al

Book published by ECPA (2010)

Batterie d'évaluation du langage oral et écrit destinée aux enfants de CE1 (2ème primaire) à la 6ème.

Detailed reference viewed: 192 (3 ULg)
See detailLa (r)évolution du Marketing
Delcourt, Cécile ULg

Article for general public (2012)

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See detailLa Bande dessinée actuelle : remise en causes des schémas traditionnels, intimisme et multimédia
Dejasse, Erwin ULg

Conference given outside the academic context (2007)

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See detail- La bande dessinée muette et le texte
Paques, Frédéric ULg

in Art&Fact (2002), 21

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See detailLa Belgique, puissance coloniale, impuissance post-coloniale
Poncelet, Marc ULg

in Où la la Belgique? : Les Soubresauts d'une petite démocratie européenne (1998)

Despite the fact that Congo was the only belgian colony, despite the importance of intermediation roles of belgians governments and civil society organizations in african affairs, the real capacity to ... [more ▼]

Despite the fact that Congo was the only belgian colony, despite the importance of intermediation roles of belgians governments and civil society organizations in african affairs, the real capacity to deploy a strongly and sustainable influence facing the dramatic history of (Zaïre/RDC) remains limited [less ▲]

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See detailLa Biologie clinique en pédiatrie: hypotonie et retard moteur
Misson, Jean-Paul ULg; Leroy, Patricia; Dubru, Jean-Marie ULg et al

in Acta Paediatrica Belgica (1996), 28(2), 95

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See detailLa carte de Vandermaelen et le paysage industriel wallon à la fin de la première industrialisation
Peters, Arnaud ULg; Defechereux, Olivier ULg

in Actes du IXème Congrès de l’Association des Cercles francophones d’Histoire et d’Archéologie de Belgique (in press)

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See detailLa cartographie des forêts anciennes en Wallonie
Kervyn, Thierry; Branquart, Etienne; Dufrêne, Marc ULg

Poster (2011)

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See detailLa Cellule qualité de l'unité de technologie des industries agro-alimentaires
Sindic, Marianne ULg

Conference (2005, February 17)

Detailed reference viewed: 5 (1 ULg)
See detailla celulas immovilizadas. Technicas de la ingenieta bioquimica
Thonart, Philippe ULg; Paquot, Michel ULg; baijot, B. et al

in Interferon y Biotechnologica, (1984)

Detailed reference viewed: 4 (0 ULg)