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See detailMapping the expansion of the Northwest Magdalenian
Miller, Rebecca ULiege

in Quaternary International (2012), 272-273

New paleoclimatic data for the Lateglacial clarify climatic phases during the Lateglacial. Cold climate played a key role in limiting Magdalenian expansion from southwest and central Europe This paper ... [more ▼]

New paleoclimatic data for the Lateglacial clarify climatic phases during the Lateglacial. Cold climate played a key role in limiting Magdalenian expansion from southwest and central Europe This paper presents chronological and geographic data for the different climatic phases to map the expansion of the Magdalenian into northwest Europe. Specifically, it can be seen that initial expansion follows a southwest-northeast trajectory into southern Germany, followed by northern expansion into Belgium, central Germany and the Paris Basin at the end of the Oldest Dryas. During the Bølling and Allerød phases, human occupation intensified in the Paris Basin and contacts and/or territorial exploitation between both the Paris Basin and the Rhineland region with Belgian territory is demonstrated. [less ▲]

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See detailMapping the functional connectome traits of levels of consciousness
Amico, Enrico; Marinazzo, Daniele; Di Perri, Carol ULiege et al

in NeuroImage (2017)

Examining task-free functional connectivity (FC) in the human brain offers insights on how spontaneous integration and segregation of information relate to human cognition, and how this organization may ... [more ▼]

Examining task-free functional connectivity (FC) in the human brain offers insights on how spontaneous integration and segregation of information relate to human cognition, and how this organization may be altered in different conditions, and neurological disorders. This is particularly relevant for patients in disorders of consciousness (DOC) following severe acquired brain damage and coma, one of the most devastating conditions in modern medical care. We present a novel data-driven methodology, connICA, which implements Independent Component Analysis (ICA) for the extraction of robust independent FC patterns (FC-traits) from a set of individual functional connectomes, without imposing any a priori data stratification into groups. We here apply connICA to investigate associations between network-traits derived from task-free FC and cognitive features that define levels of consciousness. Three main independent FC-traits were identified and linked to consciousness-related clinical features. The first one represents the functional configuration of an "awake resting" brain, and is associated to the level of arousal. The second FC-trait reflects the disconnection of the visual and sensory-motor connectivity patterns and relates to the ability of communicating with the external environment. The third FC-trait isolates the connectivity pattern encompassing the fronto-parietal and the default-mode network areas as well as the interaction between left and right hemisphere, which are also associated to the awareness of the self and its surroundings. Each FC-trait represents a distinct functional process with a role in the degradation of conscious states in functional brain networks, shedding further light on the functional subcircuits that get disrupted in severe brain-damage. [less ▲]

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See detailMapping the impact of research-by-design : paths cleared by architectural experimentation
Joachim, Guillaume ULiege

Conference (2017, April 07)

This paper aims at building a critical reflection on the valuation of design experimentation in architectural research and its impact on knowledge production. These considerations are rooted in the ... [more ▼]

This paper aims at building a critical reflection on the valuation of design experimentation in architectural research and its impact on knowledge production. These considerations are rooted in the observation of a hybrid and prospective research experience led at the University of Liège (Revisiting the apartment building 2015-2016), combining documentary research, field investigation, and a research-by-design international design studio gathering 40 architects and students in architecture. We first position the essay on the issue of harnessing design activity for the benefit of architectural research. Secondly we report on the investigation observed and the distinct knowledge production modalities involved in the project. The particular implication of the act of designing is highlighted, among other steps of the investigation, and we put forward some characteristic features of the research process. We particularly consider the different design techniques, tools and representational processes involved in four distinct architectural experimentations and their impact in the emergence of design strategies or spatial interventions. We finally open a discussion on the questions raised by the valuation of these proposals in the research, and stress the inherent tension between opening new perspectives and redefining the scope of inquiry. [less ▲]

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See detailMapping the interplay of policy paradigms and technology assessment in Flanders and Wallonia (Belgium)
Van Oudheusden, Michiel ULiege; Charlier, Nathan ULiege; Rosskamp, Benedikt ULiege et al

Conference (2013, March 13)

This paper empirically assesses how science, technology, and innovation (STI) policies in the regions of Flanders and Wallonia (Belgium) are affected by, and possibly transformed through, technology ... [more ▼]

This paper empirically assesses how science, technology, and innovation (STI) policies in the regions of Flanders and Wallonia (Belgium) are affected by, and possibly transformed through, technology assessment (TA). Broadly defined, TA encompasses activities and programs that seek to expand and deepen the knowledge base of contemporary knowledge-based economies (KBEs), typically by including new actors (e.g. trade unions), ideas (e.g. science in society), and rationales (e.g. participatory techniques) in STI processes. The paper thus seeks to render concrete how TA ideas and programs unfold with, and potentially steer, new articulations of knowledge, which are imperative to present-day STI processes. Drawing on TA case studies in the two regions, the paper illustrates how TA takes on various shapes and forms, including that of mediating instrument, policy-oriented decision-making tool linked to Parliament, and experimental-deliberative mechanism. It is argued that while these TA forms engender new kinds of knowledge and knowledge production, the extent to which TA discourses and practices are effectively taken up in STI is contingent upon how TA taps into, and aligns itself with, global and regional dynamics. The former comprise the convergence of technology research and innovation around the KBE and the advent of strategic science, with its emphasis on real-world problem solving (relevance) and basic research (excellence); the latter entail constitutional reforms that spurred the regionalization of STI policy in Belgium. Our analysis brings a macro-sociological and political sensitivity to bear on TA. Rather than conceiving of TA as a mere management tool or governance technique, we suggest that TA processes enact, as well as counteract, dominant innovation policies. How TA positions itself or is positioned in relation to these policies, is particularly relevant to consider in view of the Flemish Government’s recent decision to abolish its parliamentary TA institute and the Walloon Government’s intention of erecting one. [less ▲]

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See detailMapping the updating process: common and specific brain activations across different versions of the running span task
Collette, Fabienne ULiege; Van der Linden, Martial ULiege; Laureys, Steven ULiege et al

in Cortex : A Journal Devoted to the Study of the Nervous System & Behavior (2007), 43(1), 146-158

Neuroimaging studies exploring the neural substrates of executive functioning have only rarely investigated whether the non-executive characteristics of the experimental executive tasks could contribute ... [more ▼]

Neuroimaging studies exploring the neural substrates of executive functioning have only rarely investigated whether the non-executive characteristics of the experimental executive tasks could contribute to the observed brain activations. The aim of this study was to determine cerebral activity in three different tasks involving the updating executive function. The experimental updating tasks required subjects to process strings of items (respectively letters, words, and sounds) of unknown lengths, and then to recall or identify a specific number of presented items. Conjunction and functional connectivity analyses demonstrated that the cerebral areas activated by all three experimental tasks are the left frontopolar cortex, bilateral dorsolateral prefrontal and premotor cortex, bilateral intraparietal sulcus, right inferior parietal lobule and cerebellum. Some regions of this network appear to be more specific to each updating task. These results clearly indicate that the neural substrates underlying a specific executive process (in this case, updating) are modulated by the exact requirements of the task (such as the material to process or the kind of response) and the specific cognitive processes associated with updating. [less ▲]

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See detailMapping track density changes in nigrostriatal and extranigral pathways in Parkinson's disease
Ziegler, Erik ULiege; 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 ULiege; 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 ULiege

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 ULiege

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-Kabīr al-Muqaffā: A Detailed Study
Bauden, Frédéric ULiege

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

Detailed reference viewed: 76 (4 ULiège)
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See detailMaqriziana XI. Al-Maqrīzī et al-Ṣafadī: analyse de la (re)construction d'un récit biographique
Bauden, Frédéric ULiege

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

Detailed reference viewed: 175 (13 ULiège)