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See detailMapping track density changes in nigrostriatal and extranigral pathways in Parkinson's disease
Ziegler, Erik ULg; Rouillard, Maud; André, Elodie et al

in NeuroImage (2014), 99

Highlights First whole-brain probabilistic tractography study in Parkinson's disease High quality diffusion-weighted images (120 gradient directions, b = 2500 s/mm2) Voxel-based group analysis comparing ... [more ▼]

Highlights First whole-brain probabilistic tractography study in Parkinson's disease High quality diffusion-weighted images (120 gradient directions, b = 2500 s/mm2) Voxel-based group analysis comparing early-stage patients and controls Abnormal reconstructed track density in the nigrostriatal pathway and brainstem Track density also increased in limbic and cognitive circuits. [less ▲]

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See detailMapping uncertainty and phylogenetic uncertainty in ancestral character state reconstruction: An example in the moss genus Brachytheciastrum
Vanderpoorten, Alain ULg; Goffinet, B.

in Systematic Biology (2006), 55(6), 957-971

The evolution of species traits along a phylogeny can be examined through an increasing number of possible, but not necessarily complementary, approaches. In this paper, we assess whether deriving ... [more ▼]

The evolution of species traits along a phylogeny can be examined through an increasing number of possible, but not necessarily complementary, approaches. In this paper, we assess whether deriving ancestral states of discrete morphological characters from a model whose parameters are (i) optimized by ML on a most likely tree; (ii) optimized by ML onto each of a Bayesian sample of trees; and (iii) sampled by a MCMC visiting the space of a Bayesian sample of trees affects the reconstruction of ancestral states in the moss genus Brachytheciastrum. In the first two methods, the choice of a single- or two-rate model and of a genetic distance (wherein branch lengths are used to determine the probabilities of change) or speciational (wherein changes are only driven by speciation events) model based upon a likelihood-ratio test strongly depended on the sampled trees. Despite these differences in model selection, reconstructions of ancestral character states were strongly correlated to each others across nodes, often at r > 0.9, for all the characters. The Bayesian approach of ancestral character state reconstruction offers, however, a series of advantages over the single-tree approach or the ML model optimization on a Bayesian sample of trees because it does not involve restricting model parameters prior to reconstructing ancestral states, but rather allows a range of model parameters and ancestral character states to be sampled according to their posterior probabilities. From the distribution of the latter, conclusions on trait evolution can be made in a more satisfactorily way than when a substantial part of the uncertainty of the results is obscured by the focus on a single set of model parameters and associated ancestral states. The reconstructions of ancestral character states in Brachytheciastrum reveal rampant parallel morphological evolution. Most species previously described based on phenetic grounds are thus resolved of polyphyletic origin. Species polyphylly has been increasingly reported among mosses, raising severe reservations regarding current species definition. [less ▲]

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See detailMapping within-field soil variability for precision agriculture using electromagnetic induction
Hanquet, Bernard; Frankinet, Marc; Parez, Vincent et al

in Proceedings of AgEng (2002)

Among the crops production factors, the soil is obviously one of the most important. Therefore, within the context of Precision Agriculture, the spatial variability knowledge of its physical and chemical ... [more ▼]

Among the crops production factors, the soil is obviously one of the most important. Therefore, within the context of Precision Agriculture, the spatial variability knowledge of its physical and chemical properties is essential as a decision support information for cultural operations modulation. The purpose of this study is to assess the capability of electromagnetic induction sensing of apparent electrical conductivity (ECa) for the characterisation of withinfield variability of soil physical and/or chemical properties in the particular soil conditions encountered in our experimental area, namely non-saline deep silty soils. ECa maps were produced on a 7ha field in April 2001, September 2001 and April 2002. Concurrently, an intensive soil survey (112 points) was carried out in February 2001 in order to determine a series of physical, textural and chemical soil parameters. ECa accurately described clay content, and exchangeable K and Ca cations concentrations. [less ▲]

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See detailMapping, fine mapping, and molecular dissection of quantitative trait loci in domestic animals
Georges, Michel ULg

in Annual Review of Genomics & Human Genetics (2007), 8

Artificial selection has created myriad breeds of domestic animals, each characterized by unique phenotypes pertaining to behavior, morphology, physiology, and disease. Most domestic animal populations ... [more ▼]

Artificial selection has created myriad breeds of domestic animals, each characterized by unique phenotypes pertaining to behavior, morphology, physiology, and disease. Most domestic animal populations share features with isolated founder populations, making them well suited for positional cloning. Genome sequences are now available for most domestic species, and with them a panoply of tools including high-density single-nucleotide polymorphism panels. As a result, domestic animal populations are becoming invaluable resources for studying the molecular architecture of complex traits and of adaptation. Here we review recent progress and issues in the positional identification of genes underlying complex traits in domestic animals. As many phenotypes studied in animals are quantitative, we focus on mapping, fine mapping, and cloning of quantitative trait loci. [less ▲]

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See detailMaqriziana VIII: Quelques remarques sur l'orthographe d'al-Maqrīzī (m. 845/1442) à partir de son carnet de notes : peut-on parler de moyen arabe ?
Bauden, Frédéric ULg

in Lentin, Jérôme; Grand'Henry, Jacques (Eds.) Moyen arabe et variétés mixtes de l'arabe à travers l'histoire. Actes du Premier Colloque International (Louvain-la-Neuve, 10-14 mai 2004) (2008)

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See detailMaqriziana X. Al-Maqrīzī's al-Taʾrīḫ al-muqaffā al-kabīr
Bauden, Frédéric ULg

in Massoud, Sami (Ed.) Studies in Islamic Historiography: Essays in Honour of Professor Donald P. Little (in press)

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See detailMaqriziana XI. Al-Maqrīzī et al-Ṣafadī: analyse de la (re)construction d'un récit biographique
Bauden, Frédéric ULg

in Quaderni di Studi Arabi (2010), 4(2009), 99-136

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See detailMaqriziana XIII: An Exchange of Correspondence Between al-Maqrīzī (d. 845/1442) and al-Qalqašandī (d. 821/1418)
Bauden, Frédéric ULg

in Winter, Michael (Ed.) Festschrift Amalia Levanoni (in press)

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See detailLa maquette interactive, un outil novateur de participation
Larzilière, Adélaïde; Vermeulen, Cédric ULg; Dubiez, Emilien et al

in Bois et Forêts des Tropiques (2013), 315(1), 21-28

Henceforth, timber extraction to supply cities with fuelwood has become a major cause of deforestation in Central Africa. In the Democratic Republic of Congo, wood accounts for 90% of domestic fuel demand ... [more ▼]

Henceforth, timber extraction to supply cities with fuelwood has become a major cause of deforestation in Central Africa. In the Democratic Republic of Congo, wood accounts for 90% of domestic fuel demand and resources are increasingly over-exploited. This study addresses the issue of securing sustainable fuelwood supplies for the city of Kinshasa through sustainable management of degraded peri-urban forests in village lands, which are the main sources of supply. Management can only become sustainable with the participation of the main players involved, which are the village communities themselves. The question of participation focused primarily on taking all opinions into consideration in decisionmaking. During the design and negotiation phases for the implementation of simple management plans, a novel means of facilitation was developed in the form of an interactive scale model. This is effectively a modular tool for mapping in relief, made up of painted wooden elements that are used to create a miniature scale model of the village and its lands. The kit includes vignettes illustrating the different issues at stake in the negotiations. These models are very easy to use, by the village communities as well as by the project agents, and have not only greatly contributed to the quality and intensity of communication but also stimulated constructive thinking. Their effectiveness is nevertheless dependent on a sound prior understanding of the village community and its internal issues. As well as a simple tool to aid decision-making, it also addresses the question of real knowledge sharing, which is a key factor in the development of coherent, realistic and equitable agreements on management. [less ▲]

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See detailMarabout
Durand, Pascal ULg

in Fouché, P.; Péchoin, D.; Schuwer, Ph. (Eds.) Dictionnaire encyclopédique du livre (2005)

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See detailMarabout : ex-géant mondial de l'édition industrielle
Durand, Pascal ULg; Habrand, Tanguy ULg

Article for general public (2012)

Detailed reference viewed: 116 (36 ULg)