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See detailCloud-free satellite data for operational applications using DINEOF
Alvera Azcarate, Aïda ULg; Barth, Alexander ULg; Sirjacobs, Damien ULg et al

Conference (2010, February 24)

DINEOF (Data Interpolating Empirical Orthogonal Functions) is an EOF-based technique to reconstruct missing data in satellite data sets, such as gaps created by the presence of clouds. It is parameter ... [more ▼]

DINEOF (Data Interpolating Empirical Orthogonal Functions) is an EOF-based technique to reconstruct missing data in satellite data sets, such as gaps created by the presence of clouds. It is parameter-free, meaning that no a priori information is needed (such as signal to noise ratio, or correlation length) to calculate the missing data: this information is extracted from the data through the EOF decomposition. In addition, computational time is lower than for other frequently used techniques to reconstruct missing data in satellites, such as optimal interpolation. Multivariate reconstructions can be also done, using extended EOFs. These characteristics make DINEOF very suitable for operational reconstruction of satellite data. Recently added to DINEOF is a technique to filter the temporal covariance matrix which allows to reduce spurious variability in the temporal EOFs, and therefore leads to improved reconstructions. We will present a general description of the technology, with examples of applications to different variables. We will also give an example of a near real time reconstruction of sea surface temperature in the western Mediterranean Sea. Conceived as a demonstration product for DINEOF, it is hosted at http://gher-diva.phys.ulg.ac.be/DINEOF/dineof.html and it is automatically updated daily, presenting the cloud-free sea surface temperature for the last ten days, as well as the original data, outliers and error fields. [less ▲]

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See detailThe Clover Leaf Quasar H1413+117: New Photometric Light Curves
Remy, M.; Gosset, Eric ULg; Hutsemekers, Damien ULg et al

in Kochanek, C. S.; Hewitt, Jacqueline N (Eds.) Astrophysical applications of gravitational lensing: proceedings of the 173rd Symposium of the International Astronomical Union (1996)

Not Available

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See detailThe cloverleaf quasar H1413+117: a preliminary light curve
Arnould, P.; Remy, M.; Gosset, Eric ULg et al

in Surdej, Jean; Fraipont-Caro, Denise; Gosset, Eric (Eds.) et al The proceedings of the 31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe" (1993)

The cloverleaf quasar H1413+117 was discovered to be a gravitational lens system in 1988. Since then, it has been photometrically monitored essentially as part of the ESO key-program Gravitational lensing ... [more ▼]

The cloverleaf quasar H1413+117 was discovered to be a gravitational lens system in 1988. Since then, it has been photometrically monitored essentially as part of the ESO key-program Gravitational lensing: we present here a first preliminary lightcurve for its four individual images. [less ▲]

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See detailClovis
Kurth, Godefroid ULg

Book published by Mame (1896)

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See detailLa clozapine, source d'inspiration pour les pharmacochimistes, les pharmacologues et les psychopharmacologues
Liégeois, Jean-François ULg

Thèse d’agrégation de l’enseignement supérieur (2002)

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See detailLes clubs Federico García Lorca de la région liégeoise
Molina Marmol, Maïté ULg

in Sextant : Revue du Groupe Interdisciplinaire d'Etudes sur les Femmes (2009), 26

Le militantisme des femmes communistes espagnoles en Belgique à travers l’exemple des clubs Federico García Lorca de la région liégeoise, questionné dans une perspective intergénérationnelle.

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See detailClues for Differential Diagnosis of atypical myopathy
Votion, Dominique ULg; Amory, Hélène ULg; Sandersen, Charlotte ULg et al

in Proceeding of the Maastricht International Congress on Equine Medicine (MICEM) (2004, December)

Atypical myopathy (AM), also called “atypical myoglobinuria”, is a frequently and rapidly fatal myopathy of unknown origin occurring sporadically in grazing horses. As opposed to the exertional ... [more ▼]

Atypical myopathy (AM), also called “atypical myoglobinuria”, is a frequently and rapidly fatal myopathy of unknown origin occurring sporadically in grazing horses. As opposed to the exertional rhabdomyolysis syndrome (ERS), clinical signs of AM are not induced by exercise. The condition has been reported in several European countries including Belgium, France, Germany and Great Britain. Clinical signs of AM are characterised by muscular weakness, stiffness, recumbency, sweating and when urine is observed, myoglobinuria. These signs are characteristic but not pathognomonic of the disease; the differential diagnosis of sudden weakness, severe myopathy and/or unexpected death includes several neurogenic and myopathic disorders. The main pathologies that share clinical similarities with AM include the acute form of grass sickness (GS), acute piroplasmosis, botulism, ERS, the hyperkalemic periodic paresis (HPP), nutritional myopathy (NM; i.e. vitamin E and/or selenium deficiency), plants or drugs (i.e. ionophores intoxication) intoxication, tetanus and postanaesthesia myopathy. This report aims at reviewing key facts in history, clinical signs, clinical examination and laboratory findings that contribute towards the diagnosis of AM and/or invalidate the diagnosis of other pathologies. [less ▲]

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See detailCLUPI, a high-performance imaging system on the ESA-NASA rover of the 2018 ExoMars mission to discover biofabrics on Mars
Josset, J.-L.; Westall, F.; Hofmann, B. A. et al

in EGU General Assembly Conference Abstracts (2012, April 01)

The scientific objectives of the ESA-NASA rover of the 2018 mission of the ExoMars Programme are to search for traces of past or present life and to characterise the near-sub surface. Both objectives ... [more ▼]

The scientific objectives of the ESA-NASA rover of the 2018 mission of the ExoMars Programme are to search for traces of past or present life and to characterise the near-sub surface. Both objectives require study of the rock/regolith materials in terms of structure, textures, mineralogy, and elemental and organic composition. The 2018 rover ExoMars payload consists of a suite of complementary instruments designed to reach these objectives. CLUPI, the high-performance colour close up imager, on board the 2018 ESA-NASA Rover plays an important role in attaining the mission objectives: it is the equivalent of the hand lens that no geologist is without when undertaking field work. CLUPI is a powerful, highly integrated miniaturized (<700g) low-power robust imaging system, able to operate at very low temperatures (-120°C). CLUPI has a working distance from 10cm to infinite providing outstanding pictures with a color detector of 2652x1768. At 10cm, the resolution is 7 micrometer/pixel in color. The focus mechanism and the optical-mechanical interface are a smart assembly in titanium that can sustain a wide temperature range. The concept benefits from well-proven heritage: Proba, Rosetta, MarsExpress and Smart-1 missions… Because the main science objective of ExoMars concerns the search for life, whose traces on Mars are likely to be cryptic, close up observation of the rocks and granular regolith will be critical to the decision as whether to drill and sample the nearby underlying materials. Thus, CLUPI is the essential final step in the choice of drill site. But not only are CLUPI's observations of the rock outcrops important, but they also serve other purposes. CLUPI, could observe the placement of the drill head. It will also be able to observe the fines that come out of the drill hole, including any colour stratification linked to lithological changes with depth. Finally, CLUPI will provide detailed observation of the surface of the core drilled materials when they are in the sample drawer at a spatial resolution of 15 micrometer/pixel in color. The close-up imager CLUPI on the ESA-NASA rover of the 2018 mission will be described together with its capabilities to provide important information significantly contributing to the understanding of the geological environment and could identify outstanding potential biofabrics (stromatolites...) of past life on Mars. [less ▲]

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See detailCLUPI, a high-performance imaging system on the ESA-NASA rover of the 2018 ExoMars mission to discover biofabrics on Mars
Josset, Jean-Luc; Westall, Frances; Hofmann, B.A. et al

Conference (2012, April)

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See detailCLUPI, a high-performance imaging system on the roverof the 2018 mission to discover biofabrics on Mars
Josset; Westall; Hoffmann et al

Conference (2011, October)

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See detailCLUPI: the High-Performance Close-up Camera System on board the 2018 ExoMars Rover
Josset, J. L.; Westall, F.; Hofmann, B. A. et al

Conference (2011, April 08)

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See detailCluster analysis of genetic variants enables reclassification of Crohn’s disease at the molecular level
Cleynen, I.; Van Moerkercke, W.; Mahachie John, Jestinah ULg et al

in Gut (2009)

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See detailCluster expansion method for evolving weighted networks having vector-like nodes
Ausloos, Marcel ULg; Gligor, M.

in Acta Physica Polonica A (2008), 114(3), 491-499

The cluster variation method known in statistical mechanics and condensed matter is revived for weighted bipartite networks. The decomposition (or expansion) of a Hamiltonian through a finite number of ... [more ▼]

The cluster variation method known in statistical mechanics and condensed matter is revived for weighted bipartite networks. The decomposition (or expansion) of a Hamiltonian through a finite number of components, whence serving to define variable clusters, is recalled. As an illustration the network built from data representing correlations between (4) macroeconomic features, i.e. the so-called vector components, of 15 EU countries, as (function) nodes, is discussed. We show that statistical physics principles, like the maximum entropy criterion points to clusters, here in a (4) variable phase space: Gross Domestic Product, Final Consumption Expenditure, Gross Capital Formation and Net Exports. It is observed that the maximum, entropy corresponds to a cluster which does not explicitly include the Gross Domestic Product but only the other (3) "axes", i.e. consumption, investment and trade components. On the other hand, the minimal entropy clustering scheme is obtained from a coupling necessarily including Gross Domestic Product and Final Consumption Expenditure. The results confirm intuitive economic theory and practice expectations at least as regards geographical connexions. The technique can of course be applied to many other cases in the physics of socio-economy networks. [less ▲]

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Peer Reviewed
See detailCluster Headaches--Central or Peripheral in Origin?
Schoenen, Jean ULg

in Lancet (1998), 352(9124), 253-5

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Peer Reviewed
See detailClustered organization of homologous KRAB zinc-finger genes with enhanced expression in human T lymphoid cells
Bellefroid, Eric J.; Marine, Jean-Christophe; Ried, Thomas et al

in EMBO Journal (1993), 12(4), 1363-1374

KRAB zinc-finger proteins (KRAB-ZFPs) constitute a large subfamily of ZFPs of the Krüppel C2H2 type. KRAB (Krüppel-associated box) is an evolutionarily conserved protein domain found N-terminally with ... [more ▼]

KRAB zinc-finger proteins (KRAB-ZFPs) constitute a large subfamily of ZFPs of the Krüppel C2H2 type. KRAB (Krüppel-associated box) is an evolutionarily conserved protein domain found N-terminally with respect to the finger repeats. We report here the characterization of a particular subgroup of highly related human KRAB-ZFPs. ZNF91 is one representative of this subgroup and contains 35 contiguous finger repeats at its C-terminus. Three mRNA isoforms with sequence identity to ZNF91 were isolated by the polymerase chain reaction. These encode proteins with a KRAB domain present, partially deleted or absent. Five genomic fragments were characterized, each encoding part of a gene: the ZNF91 gene or one of four distinct, related KRAB-ZFP genes. All exhibit a common exon/intron organization with the variant zinc finger repeats organized in a single exon and the KRAB domain encoded by two separate exons. This positioning of introns supports the hypothesis that the mRNA isoforms encoding polypeptides with variability in the KRAB domain could arise by alternative splicing. By in situ chromosomal mapping studies and by analysis of fragments from a human genomic yeast artificial chromosome library containing KRAB-ZFP genes, we show that these genes occur in clusters; in particular, a gene complex containing over 40 genes has been identified in chromosomal region 19p12-p13.1. These ZNF91-related genes probably arose late during evolution since no homologous genes are detected in the mouse and rat genomes. Although the transcription of members of this KRAB-ZFP gene subgroup is detectable in all human tissues, their expression is significantly higher in human T lymphoid cells. [less ▲]

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See detailClustering behaviors in networks of integrate-and-fire oscillators
Mauroy, Alexandre ULg; Sepulchre, Rodolphe ULg

in Chaos (2008), 18

Clustering behavior is studied in a model of integrate-and-fire oscillators with excitatory pulse coupling. When considering a population of identical oscillators, the main result is a proof of global ... [more ▼]

Clustering behavior is studied in a model of integrate-and-fire oscillators with excitatory pulse coupling. When considering a population of identical oscillators, the main result is a proof of global convergence to a phase-locked clustered behavior. The robustness of this clustering behavior is then investigated in a population of nonidentical oscillators by studying the transition from total clustering to the absence of clustering as the group coherence decreases. A robust intermediate situation of partial clustering, characterized by few oscillators traveling among nearly phase-locked clusters, is of particular interest. The analysis complements earlier studies of synchronization in a closely related model. [less ▲]

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See detailClustering of Crohn’s disease patients: Identification of sub-phenotypes and population stratification
Maus, Bärbel ULg; Génin, Emmanuelle; Mahachie John, Jestinah ULg et al

in Genetic Epidemiology (2012), 36(7), 729

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See detailClustering of gangliosides in phospholipid bilayers.
Delmelle, Michel ULg; Dufrane, S. P.; Brasseur, Robert ULg et al

in FEBS Letters (1980), 121(1), 11-4

Detailed reference viewed: 9 (0 ULg)