References of "Scientific congresses and symposiums"
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See detailSmart Cities in Belgium: Barometer and perspectives
Crutzen, Nathalie ULiege

Conference (2017, December 14)

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See detailLa ville étudiante créative
Halleux, Jean-Marie ULiege

Conference (2017, December 14)

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See detailDiagnostic de la maladie de Lyme.
Pitel, Pierre Hugues; Hary, Claudine; Amory, Hélène ULiege et al

Conference (2017, December 14)

Le diagnostic de certitude de la maladie Borreliose de Lyme est éminemment complexe. La seule efficacité thérapeutique n’étant pas une preuve absolue, seule un faisceau de concordance et la réalisation ... [more ▼]

Le diagnostic de certitude de la maladie Borreliose de Lyme est éminemment complexe. La seule efficacité thérapeutique n’étant pas une preuve absolue, seule un faisceau de concordance et la réalisation d’études terrain pourront nous aider à essayer de débroussailler ce qui est encore chez le cheval une nébuleuse sujette à de nombreuses croyances et controverses. Certaines de ces études françaises et belges seront exposées lors de la présentation orale. [less ▲]

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See detailMatériaux, métiers et techniques. Vers une histoire matérielle du chantier de restauration (1830-1914): Introduction au colloque
Houbart, Claudine ULiege; Piavaux, Mathieu; Timbert, Arnaud

Conference (2017, December 14)

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See detailWeighted lexical semantic maps for areal lexical typology. Verbs of perception and cognition as a case study
Georgakopoulos, Athanasios ULiege; Grossman, Eitan; Polis, Stéphane ULiege et al

Conference (2017, December 14)

This paper aims to contribute to Distributional Typology, whose explicit aim is to investigate linguistic diversity directly (“what’s where why?”, Bickel 2007), by investigating the typology of (co ... [more ▼]

This paper aims to contribute to Distributional Typology, whose explicit aim is to investigate linguistic diversity directly (“what’s where why?”, Bickel 2007), by investigating the typology of (co-)lexicalization patterns using a bottom-up approach to semantic maps. Specifically, we propose a new method for constructing semantic maps on the basis of massive cross-linguistic data, in order to evaluate the effects of (i) inheritance, (ii) language contact, and (iii) other environmental and cultural factors on patterns of polysemy and co-lexicalization. This method allows a fine-grained analysis of the factors that lead to the effects identified by areal lexico-semantics (Koptjevskaja-Tamm & Liljegren, 2017). The semantic map model was initially created in order to describe the polysemy patterns of grammatical morphemes (see Cysouw, Haspelmath, & Malchukov, 2010 for an overview). Although studies using the model cover a wide range of linguistic phenomena, the majority pertained to the domain of grammar (e.g., Haspelmath, 1997; van der Auwera & Plungian, 1998). However, recent studies by François (2008), Perrin (2010), Wälchli and Cysouw (2012), Rakhilina and Reznikova (2016), Youn et al. (2016) and Georgakopoulos et al. (2016) have shown that the model can fruitfully be extended to lexical items. The common denominator in both lines of research is that the semantic maps were usually plotted manually, which, is particularly problematic for large-scale typological studies. In this paper, we show that existing synchronic polysemy data in large language samples, such as ASJP (Wichmann et al., 2016), CLICS (List et al., 2014), and the Open Multilingual Wordnet (Bond & Paik, 2012) can be turned into lexical matrices using Python scripts. From these lexical matrices, one can infer large-scale weighted classical lexical semantic maps, using an adapted version of the algorithm introduced by Regier, Khetarpal, and Majid (2013). This approach is innovative in several respects. First, lexical semantic maps are automatically plotted and inferred directly from a significant amount of cross-linguistic data (cf. Youn et al., 2016). Second, unlike other types of polysemy networks in the field, these maps are structured – respecting the connectivity hypothesis (Croft, 2001) and what we call the ‘economy principle’. As such, they generate more interesting implicational universals and can be falsified based on additional empirical evidence. Finally, weighted lexical semantic maps allow exploring the frequency of polysemy patterns and shared lexicalizations from both a semasiological and an onomasiological perspective, which is hardly achievable with other methods. We apply this method to a case study of verbs of perception and cognition (see Appendix for a provisional semantic map) and we enrich the result with additional cross-linguistic data (Zalziniak et al., 2012). The semantic map method allows one to visualize a structured cross-linguistic polysemy network, and to systematically analyze the types of mapping of lexical items onto this network. More specifically, the method allows one to differentiate between common polysemy patterns attested in unrelated languages and shared polysemy patterns, that is colexification patterns shared among languages in the same area. These results will be compared to (i) geographical and genetic data in order to determine the interaction between lexicalization patterns and areality, on the one hand, and common inheritance, on the other. Our findings will also be compared to (ii) proposed universal generalizations, in order to evaluate their validity and limits, and to (iii) proposed language/culture-specific associations identified in the literature (e.g., Viberg, 1984; Sweetser, 1990; Evans & Wilkins, 2000; Aikhenvald & Storch, 2013), in order to evaluate the degree to which the bottom-up method relying on large language samples matches the results of case-studies conducted by experts. [less ▲]

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See detailFilmer le fou, être saisi: une introduction au cinéma documentaire de Raymond Depardon
Hamers, Jérémy ULiege

Conference (2017, December 13)

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See detailRelationships between newborns- cry melody shapes and native language
MANFREDI, Claudia; PIERACCINI, Gianandrea; VIELLEVOYE, Renaud ULiege et al

in Manfredi, Claudia (Ed.) 10th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications - Proceedings (2017, December 13)

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See detailProviding MOOCs: A FUN way to enroll students?
Jacqmin, Julien ULiege

Conference (2017, December 13)

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See detailPhénoménologie d’Erwin Straus et espace social en psychiatrie
Rizzo, Rémy ULiege; Thoma, Samuel

Conference (2017, December 13)

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See detailObservation and simulation of ethane (C2H6) at 23 FTIR sites
Mahieu, Emmanuel ULiege; Franco, B; Pozzer, A et al

Poster (2017, December 13)

Ethane is the most abundant non-methane hydrocarbon (NMHC) in the Earth atmosphere. Its main sources are of anthropogenic origin, with globally 62% from leakage during production and transport of natural ... [more ▼]

Ethane is the most abundant non-methane hydrocarbon (NMHC) in the Earth atmosphere. Its main sources are of anthropogenic origin, with globally 62% from leakage during production and transport of natural gas, 20% from biofuel combustion and 18% from biomass burning. In the Southern hemisphere, anthropogenic emissions are lower which makes biomass burning emissions a more significant source. The main removal process is oxidation by the hydroxyl radical (OH), leading to a mean atmospheric lifetime of 2 months. Until recently, a prolonged decrease of its abundance has been documented, at rates of -1 to -2.7%/yr, with global emissions dropping from 14 to 11 Tg/yr over 1984-2010 owing to successful measures reducing fugitive emissions from its fossil fuel sources. However, subsequent investigations have reported on an upturn in the ethane trend, characterized by a sharp rise from about 2009 onwards. The ethane increase is attributed to the oil and natural gas production boom in North America, although significant changes in OH could also be at play.In the present contribution, we report the trend of ethane at 23 ground-based Fourier Transform Infrared (FTIR) sites spanning the 80ºN to 79ºS latitude range. Over 2010-2015, a significant ethane rise of 3-5%/yr is determined for most sites in the Northern Hemisphere, while for the Southern hemisphere the rates of changes are not significant at the 2-sigma uncertainty level. Dedicated model simulations by EMAC (ECHAM5/MESSy Atmospheric Chemistry; ~1.8×1.8 degrees) implementing various emission scenarios are included in order to support data interpretation. The usual underestimation of the NMHCs emissions in the main inventories is confirmed here for RCP85 (Representative Concentration Pathway Database v8.5). Scaling them by 1.5 is needed to capture the background levels of atmospheric ethane. Moreover, additional and significant emissions (~7 Tg over 2009-2015) are needed to capture the ethane rise in the Northern hemisphere. Attributing them to the oil and gas sector and locating them in North America allows EMAC to produce adequate trends in the Northern hemisphere, but not in the Southern hemisphere, where they are overestimated. Possible causes for this difference are discussed. [less ▲]

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See detailSystematic capture of MeV electron beams by MWR
Santos-Costa, Daniel; Bellotti, Amadeo; Janssen, Mike et al

Poster (2017, December 13)

Every ~ 53 days since August 2016, Juno swings by Jupiter and as the spacecraft spins along a polar orbit, measurements of Jupiter's microwave radiation are carried out at high data rates for several ... [more ▼]

Every ~ 53 days since August 2016, Juno swings by Jupiter and as the spacecraft spins along a polar orbit, measurements of Jupiter's microwave radiation are carried out at high data rates for several hours (~ 9 hours) with the Juno Microwave Radiometer (MWR). Within ~ 6 planetary radii (Rj) and from inside/outside the magnetospheric region, the thermal and synchrotron emissions are measured at high temporal and spatial resolutions. In this paper, we present a synthesis of the spatial distributions of the microwave radiation and discuss the similarities and differences observed at six wavelengths (1.3-50 cm). In addition to the thermal emission and synchrotron radiation from Jupiter's electron belt, unexpected signatures in MWR are either systematically or sporadically reported during perijove 1 (PJ1) and PJ3-PJ6. The preliminary results of a multi-instrument analysis of radio (MWR), extreme and far-ultraviolet auroral emissions (Juno UVS), field (Juno magnetometer), keV electrons (JEDI), and background radiation signatures in Juno's ASC and SRU instruments suggest that some of these signatures are consistent with the capture by MWR of synchrotron emission radiated by MeV electron beams, which may be associated with auroral activity. We subsequently describe in detail our data analysis and effort to model the synchrotron radiation from MeV electron beams to support our findings. [less ▲]

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See detailIntroduction du colloque international « Psychopathologie phénoménologique : Dépassement et ouverture »
Englebert, Jérôme ULiege; Adam, Christophe

Conference (2017, December 13)

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See detailElectron Pitch Angle Distributions Along Field Lines Connected to the Auroral Region from ~25 to ~1.2 RJ Measured by the Jovian Auroral Distributions Experiment-Electrons (JADE-E) on Juno
Allegrini, Frederic; Bagenal, Fran; Bolton, Scott J et al

Poster (2017, December 13)

The Jovian Auroral Distributions Experiment (JADE) on Juno provides critical in situ measurements of electrons and ions needed to understand the plasma distributions and processes that fill the Jovian ... [more ▼]

The Jovian Auroral Distributions Experiment (JADE) on Juno provides critical in situ measurements of electrons and ions needed to understand the plasma distributions and processes that fill the Jovian magnetosphere and ultimately produce Jupiter’s bright and dynamic aurora. JADE is an instrument suite that includes two essentially identical electron sensors (JADE-Es) and a single ion sensor (JADE-I). JADE-E measures electron energy distributions from ~0.1 to 100 keV and provides detailed electron pitch angle distributions (PAD) at ~7.5° resolution. Juno’s trajectories in the northern hemisphere have allowed JADE to sample electron energy and pitch angle distributions on field lines connected to the auroral regions from as close as ~1.2 RJ all the way to distances greater than 25 RJ. Here, we report on the evolution of these distributions. Specifically, the PADs change from mostly uniform at distances greater than ~20 RJ, to butterfly from ~18 to ~12 RJ, to field aligned or pancake, depending on the energy, closer to Jupiter. Below ~1.5 RJ, electron beams and loss cones are observed. [less ▲]

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See detailJuno-UVS observation of the Io footprint: Influence of Io’s local environment and passage into eclipse on the strength of the interaction
Hue, Vincent; Gladstone, Randy; Greathouse, Thomas K et al

Poster (2017, December 13)

The Juno mission offers an unprecedented opportunity to study Jupiter, from its internal structure to its magnetospheric environment. Juno-UVS is a UV spectrograph with a bandpass of 70<λ<205 nm, built to ... [more ▼]

The Juno mission offers an unprecedented opportunity to study Jupiter, from its internal structure to its magnetospheric environment. Juno-UVS is a UV spectrograph with a bandpass of 70<λ<205 nm, built to characterize Jupiter’s UV emissions and provide remote sensing capacities for the onboard fields and particle instruments (MAG, Waves, JADE and JEDI). Juno’s orbit allows observing Jupiter from a unique vantage point above the poles. In particular, UVS has observed the instantaneous Io footprint and extended tail as Io enters into eclipse. This observation may better constrain whether the atmosphere of Io is sustained via volcanic activity or sublimation. Among other processes, the modulation of Io’s footprint brightness correlates to the strength of the interaction between the Io plasma torus and its ionosphere, which, in turn, is likely to be affected by the atmospheric collapse. UVS observed the Io footprint during two eclipses that occurred on PJ1 and PJ3, and one additional eclipse observation is planned during PJ9 (24 Oct. 2017). We present how the electrodynamic coupling between Io and Jupiter is influenced by changes in Io’s local environment, e.g. Io’s passage in and out of eclipse and Io’s traverse of the magnetodisc plasma sheet. [less ▲]

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See detailEffet de la cuisson sur le profil en fibres de quelques légumes tropicaux
Kalala Bolokango, Gaetan ULiege; KAMBASHI, Bienvenu; Everaert, Nadia ULiege et al

Poster (2017, December 13)

Outre le monde occidental, les pays africains dont la population a souffert de malnutrition intra-utérine sont également exposés au fléau de l’obésité à l’âge adulte en raison d’effets de programmation de ... [more ▼]

Outre le monde occidental, les pays africains dont la population a souffert de malnutrition intra-utérine sont également exposés au fléau de l’obésité à l’âge adulte en raison d’effets de programmation de long terme induits par les carences dans le jeune âge. La consommation de fibres alimentaires (DF) demeure indispensable pour la modulation du microbiote intestinal afin de prévenir cette maladie et les pathologies associées. Les légumes et les fruits sont des principales sources naturelles de DF. . En Afrique tropicale humide et sub-humide, les légumes feuilles sont fortement consommés par les populations rurales, tandis que les populations urbaines modifient leur régime alimentaire en l’ « occidentalisant ». Afin de mieux comprendre comment les changements alimentaires modifient les modes de consommation des fibres alimentaires, face à la déficience d’information dans la littérature à ce sujet, il convient de caractériser le profil en fibres de légumes méconnus et l’impact de la cuisson sur celui-ci. [less ▲]

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Peer Reviewed
See detailBabies Voices : A collaborative research program on the automated analysis of the preterm newborn cry.
VIELLEVOYE, Renaud ULiege; MELINO, Donatella; ORLANDI, Silvia et al

in Manfredi, Claudia (Ed.) 10th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications - Proceedings (2017, December 13)

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See detailOverview of HST observa7ons of Jupiter’s ultraviolet aurora during Juno orbits 3 to 7
Grodent, Denis ULiege; Bonfond, Bertrand ULiege; Yao, Zhonghua ULiege et al

Conference (2017, December 12)

Jupiter’s permanent ultraviolet auroral emissions have been systematically monitored from Earth orbit with the Hubble Space Telescope (HST) during an 8-month period. The Girst part of this HST large ... [more ▼]

Jupiter’s permanent ultraviolet auroral emissions have been systematically monitored from Earth orbit with the Hubble Space Telescope (HST) during an 8-month period. The Girst part of this HST large program (GO-14634) was meant to support the NASA Juno prime mission during orbits PJ03 through PJ07. The HST program will resume in Feb 2018, in time for Juno’s PJ11 perijove, right after HST’s solar and lunar avoidance periods. HST observations are designed to provide a Jovian auroral activity background for all instruments on-board Juno and for the numerous ground based and space based observatories participating to the Juno mission. In particular, several HST visits were programmed in order to obtain as many simultaneous observations with Juno-UVS as possible, sometimes in the same hemisphere, sometimes in the opposite one. In addition, the timing of some HST visits was set to take advantage of Juno’s multiple crossings of the current sheet and of the magnetic Gield lines threading the auroral emissions. These observations are obtained with the Space Telescope Imaging Spectrograph (STIS) in time-tag mode, they consist in spatially resolved movies of Jupiter’s highly dynamic aurora with timescales ranging from seconds to several days. Here, we present an overview of the present -numerous- HST results. They demonstrate that while Jupiter is always showing the same basic auroral components, it is also displaying an ever-changing auroral landscape. The complexity of the auroral morphology is such that no two observations are alike. Still, in this apparent chaos some patterns emerge. This information is giving clues on magnetospheric processes at play at the local and global scales, the latter being only accessible to remote sensing instruments such as HST. [less ▲]

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See detailA Study of Local Time Variations of Jupiter’s Ultraviolet Aurora using Juno-UVS
Greathouse, Thomas K; Gladstone, Randy; Versteeg, Maarten H et al

Conference (2017, December 12)

Juno’s Ultraviolet Spectrograph (Juno-UVS) offers unique views of Jupiter’s auroras never before obtained in the UV, observing at all local times (unlike HST observations, limited to the illuminated disk ... [more ▼]

Juno’s Ultraviolet Spectrograph (Juno-UVS) offers unique views of Jupiter’s auroras never before obtained in the UV, observing at all local times (unlike HST observations, limited to the illuminated disk). With Juno’s 2-rpm spin period, the UVS long slit rapidly scans across Jupiter observing narrow stripes or swaths of Jupiter’s poles, from 5 hours prior to perijove until 5 hours after perijove. By rotating a mirror interior to the instrument, UVS can view objects from 60 to 120 degrees off the spacecraft spin axis. This allows UVS to map out the entire auroral oval over multiple spins, even when Juno is very close to Jupiter. Using the first 8 perijove passes, we take a first look for local time effects in Jupiter’s northern and southern auroras. We focus on the strength of auroral oval emissions and polar emissions found poleward of the main oval. Some unique polar emissions of interest include newly discovered polar flare emissions that start off as small localized points of emission but quickly (10’s of sec) evolve into rings. These emissions evolve in such a way as to be reminiscent of raindrops striking a pond. [less ▲]

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See detailFirst simultaneous observations of local moon aurora and the moon footprints in Jupiter’s polar aurora
Roth, Lorenz; Grodent, Denis ULiege; Gladstone, Randy et al

Conference (2017, December 12)

The interaction of the co-rotating magnetospheric plasma with Jupiter’s Galilean moons generates local perturbations and auroral emissions in the moons’ tenuous atmospheres. Alfvén waves are launched by ... [more ▼]

The interaction of the co-rotating magnetospheric plasma with Jupiter’s Galilean moons generates local perturbations and auroral emissions in the moons’ tenuous atmospheres. Alfvén waves are launched by this local interaction and travel along Jupiter’s field lines triggering various effects that finally lead to the auroral moon footprints far away in Jupiter’s polar regions. Within the large Hubble Space Telescope aurora program in support of the NASA Juno mission (HST GO-14634, PI D. Grodent), HST observed the local aurora at the moons Io and Ganymede on three occasions in 2017 while the Juno Ultraviolet Spectrograph simultaneously observed Jupiter’s aurora and the moon footprints. In this presentation, we will provide first results from the first-ever simultaneous moon and footprint observations for the case of Io. We compare the temporal variability of the local moon aurora and the Io footprint, addressing the question how much of the footprint variability originates from changes at the moon source and how much originates from processes in the regions that lie in between the moon and Jupiter’s poles. [less ▲]

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See detailDiscovering Routers in Load-balanced Paths
Grailet, Jean-François ULiege; Donnet, Benoît ULiege

in 13th International Conference on emerging Networking EXperiments and Technologies Student Workshop (2017, December 12)

Usually, a set of Traceroute measurements collected for a large amount of target IPs contain one or several route hops at which the IP interfaces vary from one measurement to another. These variations ... [more ▼]

Usually, a set of Traceroute measurements collected for a large amount of target IPs contain one or several route hops at which the IP interfaces vary from one measurement to another. These variations occur even if several measurements share the same length and the same last hops. This is likely a consequence of load balancing, a traffic engineering policy which aims at sharing the load to ensure quality of service. In this paper, we consider the problem of conducting alias resolution on IP interfaces discovered via Traceroute and which are involved in load balancing. By conducting alias resolution in such a context, we want to verify if the IP interfaces involved in load balancing belong to unique routers, and more broadly, how relevant is alias resolution in this context. To do so, we use a slightly edited version of TreeNET, a topology discovery tool which relies on a tree-like structure based on Traceroute measurements to map a target domain. The upgraded TreeNET along the measurements described in this paper are both freely available online. [less ▲]

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See detailTransient brightening of Jupiter's aurora observed by the Hisaki satellite and Hubble Space Telescope during approach phase of the Juno spacecraft (Invited)
Kimura, Tomoki; Nichols, Jonathan D.; Gray, Rebecca et al

Conference (2017, December 12)

In early 2014, continuous monitoring with the Hisaki satellite discovered transient auroral emission at Jupiter during a period when the solar wind was relatively quiet for a few days. Simultaneous ... [more ▼]

In early 2014, continuous monitoring with the Hisaki satellite discovered transient auroral emission at Jupiter during a period when the solar wind was relatively quiet for a few days. Simultaneous imaging made by the Hubble Space Telescope (HST) suggested that the transient aurora is associated with a global magnetospheric disturbance that spans from the inner to outer magnetosphere. However, the temporal and spatial evolutions of the magnetospheric disturbance were not resolved because of the lack of continuous monitoring of the transient aurora simultaneously with the imaging. Here we report the coordinated observation of the aurora and plasma torus made by Hisaki and HST during the approach phase of the Juno spacecraft in mid-2016. On day 142, Hisaki detected a transient aurora with a maximum total H2 emission power of ~8.5 TW. The simultaneous HST imaging was indicative of a large ‘dawn storm’, which is associated with tail reconnection, at the onset of the transient aurora. The outer emission, which is associated with hot plasma injection in the inner magnetosphere, followed the dawn storm within less than two Jupiter rotations. The monitoring of the torus with Hisaki indicated that the hot plasma population increased in the torus during the transient aurora. These results imply that the magnetospheric disturbance is initiated via the tail reconnection and rapidly expands toward the inner magnetosphere, followed by the hot plasma injection reaching the plasma torus. This corresponds to the radially inward transport of the plasma and/or energy from the outer to the inner magnetosphere. https://doi.org/10.1002/2017GL072912 [less ▲]

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See detailTransnational families, mobility and development: The case of Latin American domestic workers in Europe
Vivas Romero, Maria ULiege

Conference (2017, December 12)

This lecture provides a general overview of Transnational Families in Latin America, highlighting their impact on the social and economic development of sending, destination and in-between countries. In ... [more ▼]

This lecture provides a general overview of Transnational Families in Latin America, highlighting their impact on the social and economic development of sending, destination and in-between countries. In order to do so, it takes as an example the case of Latin American families in Europe. It uses support from empirical cases covered in the literature as well as by the author's own fieldwork with Transnational Families in Belgium, Peru and, Colombia. [less ▲]

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See detailA comparative examination of auroral acceleration processes at Jupiter and Earth as enabled by the Juno mission to Jupiter
Mauk, Barry; Haggerty, Dennis; Paranicas, Chris et al

Conference (2017, December 12)

Particle distributions observed by Juno’s Energetic Particle Detector Investigation (JEDI) at low altitudes over Jupiter’s polar regions are exceedingly diverse in directionality and in the shapes of ... [more ▼]

Particle distributions observed by Juno’s Energetic Particle Detector Investigation (JEDI) at low altitudes over Jupiter’s polar regions are exceedingly diverse in directionality and in the shapes of their 3-dimensional energy distributions. Asymmetric, bi-directional angular beams with broad energy distributions are often observed near Jupiter’s main auroral oval with considerable variability as to whether upward or downward intensities are the strongest. Signatures of upward and downward magnetic field-aligned potentials, with inferred potentials up to 100’s of kV are sometimes observed, but unlike at Earth, these potentials do not seem to be associated with the strongest discrete-like auroral emission intensities. Particle distributions have similarities to those observed at Earth over the various phenomenological auroral emission regions, but they are observed in unexpected places with respect to the strongest auroral emission regions, and the jovian distributions are much more energetic. We present a comparative examination of auroral acceleration processes observed at Earth and Jupiter in relation to the respective auroral emission regions. [less ▲]

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See detailAn overview of the first year of observations of Jupiter’s auroras by Juno-UVS with multi-wavelength comparisons
Gladstone, Randy; Greathouse, Thomas K; Versteeg, Maarten H et al

Conference (2017, December 12)

Juno’s Ultraviolet Spectrograph (Juno-UVS) has observed the Jovian aurora during eight perijove passes. UVS typically observes Jupiter for 10 hours centered on closest approach in a series of swaths, with ... [more ▼]

Juno’s Ultraviolet Spectrograph (Juno-UVS) has observed the Jovian aurora during eight perijove passes. UVS typically observes Jupiter for 10 hours centered on closest approach in a series of swaths, with one swath per Juno spin (~30s). During this period the spacecraft range to Jupiter’s aurora decreases from ~6 RJ to ~0.3 RJ (or less) in the north, and then reverses this in the south, so that spatial resolution changes dramatically. A scan mirror is used to target different features or raster across the entire auroral region. Juno-UVS observes a particular location for roughly 17 ms/swath, so the series of swaths provide snapshots of ultraviolet auroral brightness and color. A variety of forms and activity levels are represented in the Juno-UVS data–some have been described before with HST observations, but others are new. One interesting result is that the color ratio, often used as a proxy for energetic particle precipitation, may instead (in certain regions) indicate excitation of H2 by low-energy ionospheric electrons. Additional results from comparisons with simultaneous observations at x-ray, visible, and near-IR wavelengths will also be presented. [less ▲]

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See detailProbing Jupiter’s auroral radio sources with Juno
Imai, M.; Kurth, W. S.; Hospodarsky, G. B. et al

Conference (2017, December 12)

Jupiter is the major auroral radio source in our solar system, producing Jovian low-frequency radio emissions in a broad frequency range of 10 kHz to 40 MHz from both north and south polar regions of the ... [more ▼]

Jupiter is the major auroral radio source in our solar system, producing Jovian low-frequency radio emissions in a broad frequency range of 10 kHz to 40 MHz from both north and south polar regions of the planet. These sporadic nonthermal bursts have been monitored with the radio and plasma wave instrument (Waves) aboard the spinning Juno spacecraft in polar orbit about Jupiter since July 5, 2016. The Waves instrument is composed of one electric dipole antenna, one magnetic search coil sensor, and three on-board receivers that record the electric fields of waves from 50 Hz to 41 MHz and the magnetic fields of waves from 50 Hz to 20 kHz. Juno has three advantageous methods to determine the radio source locations and the beaming properties for the Jovian low-frequency radio emissions: (1) identifying emission frequency close to the local gyrofrequency at the source with in situ particle measurements through Juno's perijove surveys from pole to pole, (2) the spin-modulated spectral density recorded with Juno Waves to estimate the direction of arrival of incoming waves, and (3) with the aid of the Jovian radio beaming model, performing stereoscopic radio observations with Juno, Cassini, STEREO A, WIND, and Earth-based radio telescopes (e.g., LWA1 in New Mexico, USA, and NDA in Nançay, France) or investigating the statistical characteristics of Jovian radio occurrence by Juno. Because the three individual methods are self-consistent and complement each other, Juno observations are useful for determining the Jovian radio beam parameters and radio source locations, which can be traced along magnetic field lines onto Jupiter's atmosphere and further compared with the UV aurora taken by the Hubble Space Telescope. In this talk, we give a brief overview of early radio astronomy results from Juno, providing the recent results from these extended studies by means of the three methods. [less ▲]

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See detailPoliticizing Europe: Normative Conditionality in the EU Institutions’ Interpretations of Europe(-anness)
Niessen, Annie ULiege

Conference (2017, December 12)

“Europe” and “Europeanness” have always been key notions in the construction process of the European Union (EU). Indeed, Article 49 of the Treaty on the European Union enshrines as primary condition that ... [more ▼]

“Europe” and “Europeanness” have always been key notions in the construction process of the European Union (EU). Indeed, Article 49 of the Treaty on the European Union enshrines as primary condition that a State must be “European” to be eligible for EU membership. However, there is neither a consensual nor an official definition of this term which can take on various meanings, broadly ranging from geographical to cultural ones. This polysemy has driven the EU institutions to provide their own interpretations, especially within the framework of enlargements and membership applications. Building on an analysis of institutional documents, the paper investigates how the notions of “Europe” and “Europeanness” have been interpreted since the inception of the EU and, in fine, politicized through the implementation of normative conditions. This analysis eventually led to a new, up-to-date model of the conditions that a State has to meet to be considered “European”, which further highlights the institutional conceptualization of Europe(-anness). [less ▲]

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Peer Reviewed
See detailVersatile Catalyst Materials Fabrication by Low-Pressure Plasma Treatments
Busby, Yan; da Silva Pires, Mathieu; Haye., Emile et al

Conference (2017, December 12)

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See detailSome novel applications of virtual reality (VR) in the domain of health
Grogna, David ULiege; Stassart, Céline ULiege; Bragard, Isabelle ULiege et al

Conference (2017, December 12)

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See detailAn Observation-Based Middlebox Policy Taxonomy
Edeline, Korian ULiege; Donnet, Benoît ULiege

in 13th International Conference on emerging Networking EXperiments and Technologies Student Workshop (2017, December 12)

Recent years have seen the rise of middleboxes, such as NATs, firewalls, or TCP accelerators. Those middleboxes play an important role in today's Internet, including enterprise networks and cellular ... [more ▼]

Recent years have seen the rise of middleboxes, such as NATs, firewalls, or TCP accelerators. Those middleboxes play an important role in today's Internet, including enterprise networks and cellular networks. However, despite their undisputable success in modern network architecture, their actual impact on packets, traffic, and network performance is not that much understood. In this paper, we propose a path impairment oriented middlebox classification that aims at categorizing the initial purpose of a middlebox policy as well as its potential complications. [less ▲]

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See detailRole for PARs and thrombin-GPIbα interaction in thrombin induced procoagulant platelet formation
Bourcy, Morgane ULiege; Wang, Samuel; Pasalic, Leonardo et al

Poster (2017, December 11)

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See detailContribution des Systèmes d’Information Géographique pour la cartographie des zones à risques d’inondation à Yaoundé
Zogning Moffo, Maurice Olivier; Ozer, Pierre ULiege; Dewals, Benjamin ULiege

Conference (2017, December 11)

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See detailVulnérabilité aux inondations dans le contexte des changements climatiques à New-Bell Ngangue, un quartier planifié de la ville de Douala, Cameroun
Amanejieu, Amélie; Feumba, Rodrigue Aimé; Ngoufo, Roger et al

Conference (2017, December 11)

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See detailPolitique wallonne de la ville : (1) Programme de développement urbain / (2) Cadre stratégique / (3) Quartiers prioritaires / (4) Activités économiques
Bianchet, Bruno ULiege; Claeys, Dorian ULiege; Mercenier, Chloé ULiege et al

Poster (2017, December 11)

Posters présentant les analyses et recommandations émises en vue de la mise en place éventuelle d'une politique de la ville en Wallonie, dans le cadre d'une recherche menée au sein de la Conférence ... [more ▼]

Posters présentant les analyses et recommandations émises en vue de la mise en place éventuelle d'une politique de la ville en Wallonie, dans le cadre d'une recherche menée au sein de la Conférence Permanente du Développement Territorial (CPDT). [less ▲]

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See detailInvestigation of the shielding properties of a Bi-2212 bulk superconducting tube subjected to an inhomogeneous magnetic field at various temperatures
Hogan, Kevin ULiege; Wera, Laurent ULiege; Fagnard, Jean-François ULiege et al

Poster (2017, December 11)

Magnetic shielding with bulk superconductors is commonly studied under homogeneous magnetic fields. This configuration simplifies the analysis of the magnetic reaction of the superconductor as the applied ... [more ▼]

Magnetic shielding with bulk superconductors is commonly studied under homogeneous magnetic fields. This configuration simplifies the analysis of the magnetic reaction of the superconductor as the applied magnetic field is known precisely everywhere. In practical applications, however, the magnetic field to be screened is seldom homogeneous. Magnetic shields experience magnetic field gradients and flux lines curvatures that might lead to a deterioration of the shielding properties. In the present work, we investigate experimentally the magnetic shielding properties of a bulk superconducting Bi-2212 tube subjected to an inhomogeneous magnetic field. This study is carried out at various temperatures thanks to a bespoke variable temperature measurement system based on a cryocooler. A superconducting pancake coil, made of 1G superconducting tape (Bi-2223), generates the inhomogeneous magnetic field to be screened. The bulk superconducting tube is anchored thermally to a sample holder fixed in the vicinity of the cold head. A cryogenic Hall probe is placed at the center of the bulk Bi-2212 tube to characterize the shielding properties of the superconductor. With this system, we characterize the threshold induction, i.e. the maximal applicable magnetic field below which the shielding factor (ratio between the measured and applied field) drops below a threshold value, at various temperatures ranging from 60 K to 92 K. Then we show and discuss the effect of the sweep rate of the applied magnetic field on the threshold induction value. Our experimental results are confronted to experimental results obtained at 77 K in an axial homogeneous magnetic field. This allow us to emphasize the impact of the inhomogeneity of the applied magnetic field on the shielding properties. We finally point out the portions of the magnetic field shield experiencing the highest magnetic field. [less ▲]

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See detailRecent evolution of the coastline in the Gulf of Guinea. Example of Togo and Benin (2000-2016)
Ozer, Pierre ULiege; Hountondji, Yvon-Carmen; De Longueville, Florence

Conference (2017, December 11)

The land-sea interface is an extremely fragile environment. On a global scale, coastlines are threatened by a multitude of factors sometimes natural and mostly anthropogenic. Thus, in addition to the ... [more ▼]

The land-sea interface is an extremely fragile environment. On a global scale, coastlines are threatened by a multitude of factors sometimes natural and mostly anthropogenic. Thus, in addition to the disruptions to coastal areas by port facilities, dams, sediment sampling on the beach or urban sprawl, there are the consequences of climate change, including rising sea levels. Studies conducted in West Africa show important shoreline erosion processes in recent years with many socio-economic consequences. [...] [less ▲]

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See detailSystèmes d'informations foncières et politiques publiques (2015 - 2016)
Hendrickx, Sébastien ULiege; Ruelle, Christine ULiege; Zangl, Stéphanie ULiege et al

Poster (2017, December 11)

La recherche s’intéresse à la question de l’intérêt de développer l’observation foncière en Wallonie. Par une approche documentaire, sur la base d’entretiens auprès de témoins privilégiés et par une ... [more ▼]

La recherche s’intéresse à la question de l’intérêt de développer l’observation foncière en Wallonie. Par une approche documentaire, sur la base d’entretiens auprès de témoins privilégiés et par une enquête adressée à l’ensemble des communes wallonnes, elle tente d’évaluer la prise en compte des systèmes d’informations foncières en vue de mener à bien une politique d’aménagement du territoire efficace. Le poster présente les objectifs de cette recherche et les résultats acquis lors de la subvention 2015 - 2016. [less ▲]

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See detailPeople moved and will move again
Gemenne, François ULiege; De Longueville, Florence; De Bruyckere, Luka ULiege et al

Conference (2017, December 11)

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See detailCassini UVIS Observations of Saturn during the Grand Finale Orbits (Invited)
Pryor, Wayne R; Esposito, Larry W; West, Robert et al

Conference (2017, December 11)

In 2016 and 2017, the Cassini Saturn orbiter executed a final series of high inclination, low-periapsis orbits ideal for studies of Saturn's polar regions. The Cassini Ultraviolet Imaging Spectrograph ... [more ▼]

In 2016 and 2017, the Cassini Saturn orbiter executed a final series of high inclination, low-periapsis orbits ideal for studies of Saturn's polar regions. The Cassini Ultraviolet Imaging Spectrograph (UVIS) obtained an extensive set of auroral images, some at the highest spatial resolution obtained during Cassini's long orbital mission (2004-2017). In some cases, two or three spacecraft slews at right angles to the long slit of the spectrograph were required to cover the entire auroral region to form auroral images. We will present selected images from this set showing narrow arcs of emission, more diffuse auroral emissions, multiple auroral arcs in a single image, discrete spots of emission, small scale vortices, large-scale spiral forms, and parallel linear features that appear to cross in places like twisted wires. Some shorter features are transverse to the main auroral arcs, like barbs on a wire. UVIS observations were in some cases simultaneous with auroral observations from the Hubble Space Telescope Space Telescope Imaging Spectrograph (STIS) that will also be presented. UVIS polar images also contain spectral information suitable for studies of the auroral electron energy distribution. The long wavelength part of the UVIS polar images contains a signal from reflected sunlight containing absorption signatures of acetylene and other Saturn hydrocarbons. The hydrocarbon spatial distribution will also be examined. [less ▲]

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See detailMagnetic shielding of open and semi-closed tubes made of bulk superconductors : the role of a cap
Vanderbemden, Philippe ULiege; Wera, Laurent ULiege; Hogan, Kevin ULiege et al

Conference (2017, December 11)

Amongst the range of prospective applications for bulk superconductors, the shielding of high magnetic fields at low frequency is extremely promising. Unlike conventional high permeability ferromagnetic ... [more ▼]

Amongst the range of prospective applications for bulk superconductors, the shielding of high magnetic fields at low frequency is extremely promising. Unlike conventional high permeability ferromagnetic materials which exhibit a relatively low saturation magnetization (e.g. µ0Msat ~ 0.75 T for mumetal), superconductors do not suffer from this drawback. They are therefore well suited to shield magnetic flux densities above 1 tesla. This can be achieved by hollow bulk superconductors of cylindrical geometry. The shielding efficiency and shielded volume are both strongly improved when the hollowed tube is closed at one extremity. As an example, we showed recently [1] that YBa2Cu3O7 (YBCO) tubes of ~ 10 mm inner diameter closed at one extremity and engineered by a buffer-aided top seeded melt growth fabrication process were able to attenuate axial flux densities of 1.5 T by a factor of 100 at 20 K. Such record performances are partly due to the presence of a cap at one extremity. The aim of the present work is to examine further and understand the influence of a cap on the shielding properties for various configurations. In this communication we investigate the shielding properties of hollow and semi-closed bulk superconducting tubes at 77 K. For the semi-closed configuration, we compare situations the cap is either placed against the extremity (with a small controllable gap between them) or welded naturally. The field to be shielded is either parallel or perpendicular to the main axis of the tube. Both YBCO tubes produced by buffer-aided top seeded melt growth and commercial Bi-2223 tubes are studied. The experimental results are compared to finite element numerical modelling carried out either in 2D (for the axial configuration) or 3D (for the transverse configuration). In the axial configuration, the results show that a small gap between the tube and the cap is not detrimental to the shielding properties. We also show that the shielded volume can be easily enhanced by increasing the thickness of the cap or its critical current density. In the transverse configuration, the results point out the crucial role of the superconducting joint between the tube and the cap. The need for a superconducting joint depends therefore on the main direction of the magnetic field to be shielded. References: [1] L. Wéra. et al., IEEE. Trans. Appl. Supercond. 27 (2017) 6800305 [less ▲]

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See detailExposition et vulnérabilité face aux risques d’inondation au Burkina Faso : Cas de la ville de Dori
Tomety, Yaovi Djivénou; Dewals, Benjamin ULiege; Ozer, Pierre ULiege

Conference (2017, December 11)

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See detail« Cap-Haïtien » or « How to ‘construct’ a flood risk in a decade »
Gracius, Gracia Joseph; Ozer, Pierre ULiege

Conference (2017, December 11)

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See detailCharges d'urbanisme et principe de proportionnalité
Hendrickx, Sébastien ULiege; Defer, Valentine ULiege; Maldague, Hubert ULiege et al

Poster (2017, December 11)

La recherche concerne les obligations imposées au promoteur et plus particulièrement le concept d’ « obligations de faire liées aux permis », soit les obligations de fournir une prestation, un service ou ... [more ▼]

La recherche concerne les obligations imposées au promoteur et plus particulièrement le concept d’ « obligations de faire liées aux permis », soit les obligations de fournir une prestation, un service ou un versement d’argent que peuvent imposer les autorités compétentes dans le cadre de la délivrance d’un permis d’urbanisme ou d’urbanisation. Le poster présente les objectifs de la recherche, la méthodologie et les résultats engrangés. [less ▲]

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See detailActivités agro-économiques: Méthodologie établie pour répondre aux objectifs de la recherche
Bruggeman, Derek; Coppens, Alain; Courtois, Xavier et al

Poster (2017, December 11)

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See detailActivités agro-économiques: Besoins et attentes des acteurs de la filière céréalière wallonne
Andre, Marie ULiege; Bruggeman, Derek; Coppens, Alain et al

Poster (2017, December 11)

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See detailVulnérabilité et adaptation des communautés lacustres aux inondations à Sô-Ava dans la basse vallée de l’Ouémé, Bénin
Lokossou, Martin Augustin; De Longueville, Florence; Ozer, Pierre ULiege

Conference (2017, December 11)

Detailed reference viewed: 32 (3 ULiège)
See detailRéflexions sur l'espace public oppositionnel à partir d'Arlette Farge et d'Hannah Arendt
Glorie, Caroline ULiege

Conference (2017, December 11)

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See detailRisk management in Ivory Coast: case study of population evictions in Port-Bouët, Abidjan
Comoe, Boua Raymond; Ozer, Pierre ULiege

Conference (2017, December 11)

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See detailLa wallonie et ses territoires dans la globalisation postindustrielle
Halleux, Jean-Marie ULiege

Conference (2017, December 11)

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See detailVulnérabilité sanitaire et environnementale dans les quartiers inondables de la commune de Cap-Haïtien, Haïti
Bilomba Ngandu, Pontien; Von Frenckell, Marianne ULiege; Ozer, Pierre ULiege

Conference (2017, December 11)

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See detailInterests of using the RCM MAR to downscale CMIP6 outputs
Amory, Charles ULiege; Kittel, Christoph ULiege; Delhasse, Alison ULiege et al

Conference (2017, December 10)

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See detailDu micro au macro ou vice-versa : la recherche en criminologie dans tous ses états
Vanneste, Charlotte ULiege

Conference (2017, December 08)

Dans cette conférence nous proposons une réflexion sur les niveaux d'analyse et leur articulation dans le cadre de la recherche en criminologie. Partant des questions épistémologiques que pose le passage ... [more ▼]

Dans cette conférence nous proposons une réflexion sur les niveaux d'analyse et leur articulation dans le cadre de la recherche en criminologie. Partant des questions épistémologiques que pose le passage du niveau macro au niveau micro, ou vice-versa, nous procédons à ce que Jacques Revel a qualifié de "jeu d'échelles", en prenant en exemple deux morceaux choisis de recherche qui alimentent tous deux notre connaissance de l'exercice de punir, développés pour l'un au niveau macro et pour l'autre au niveau micro. Les résultats d'une approche en termes de "Political Economy of Punishment" sont ainsi mis en perspective avec les conclusions de l'analyse micro-criminologique d'un fait divers singulier réalisée par Ivan Jablonka dans son ouvrage "Laetitia ou la fin des hommes" - roman également primé pour ses talents littéraires. [less ▲]

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See detailTourbières d'altitude en Haute Savoie
Streel, Maurice ULiege; David, Fernand; Roche, Emile ULiege et al

Conference (2017, December 08)

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See detailFirst spore data of the Upper Devonian Bolloncillos Formation (NE Iberian Peninsula)
Cascales-Miñana, Borja ULiege; Steemans, Philippe ULiege; Rial, G et al

Conference (2017, December 08)

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See detailEpidemiology of urolithiasis in Liège according to morpho-constitutional classification
Castiglione, Vincent ULiege

Conference (2017, December 08)

Background Stone components are various and influenced by acquired and inherited factors. Hence we describe the distribution of stone composition in Belgium according to age and sex. Methods We ... [more ▼]

Background Stone components are various and influenced by acquired and inherited factors. Hence we describe the distribution of stone composition in Belgium according to age and sex. Methods We retrospectively reviewed 1869 urinary stones analyzed between 2010 and 2013 at the laboratory of the CHU of Liège (Belgium). Samples were assessed by infrared spectroscopy, and morphology was used to classify stones in morpho-constitutional types according to Daudon classification. Results Among 1869 stones, 69.2% affected men. The prevalence peak was observed between 50–60 years of age in both genders. The main constituent was calcium oxalate monohydrate (54.4%), mainly organized as type Ia (94%). Calcium oxalate dihydrate was found in 19.8% samples, with an equal distribution between types IIa and IIb. Uric acid was the 3rd most frequent constituent in man (10.8%), instead of phosphates in woman (26.6%). Urinary infection may be the main cause of stone formation in 6% of patients. Multiple morphological types were concomitantly identified in 49.3% of stones. The proportion of calcium oxalate dihydrate stones decreased with aging, while monohydrate and uric acid increased in both genders. Conclusion This retrospective analysis of urinary stones helps for the first time to characterize the epidemiology of urolithiasis in Belgium. [less ▲]

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See detailSouth American miospore evolution, from their first appearance up to the Early Devonian
Steemans, Philippe ULiege; Garcia Muro, VJ; Gerrienne, Philippe ULiege et al

Conference (2017, December 08)

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See detailA new look at some Late Devonian floras from Eastern Europe
Snigirevsky, S.M.; Meyer-Berthaux, B.; Steemans, Philippe ULiege et al

Conference (2017, December 08)

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See detailPromoting vaginal distribution of two active siRNA-complexed in liposomes for cervical cancer treatment
Lechanteur, Anna ULiege; Furst, Tania; Delvenne, Philippe ULiege et al

Conference (2017, December 07)

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See detailThe inhibitory effect of Carnobacterium maltaromaticum isolated from vacuum packed meat against Escherichia coli O157:H7, Listeria monocytogenes and Salmonella Typhimurium
Didimo Imazaki, Pedro Henrique ULiege; Maia Danielski, Gabriela; Daube, Georges ULiege et al

Conference (2017, December 07)

Foodborne disease outbreaks are one of the leading causes of infections, hospitalisations and deaths provoked by pathogenic bacteria. Biopreservation is a hurdle which consists of the use of controlled ... [more ▼]

Foodborne disease outbreaks are one of the leading causes of infections, hospitalisations and deaths provoked by pathogenic bacteria. Biopreservation is a hurdle which consists of the use of controlled microorganisms or its metabolites to preserve food and extend its shelf-life. Carnobacteria have been studied for their bioprotective properties since they can inhibit pathogenic and spoilage microorganisms. In this way, this study aimed to evaluate in vitro the bioprotective potential of Carnobacterium maltaromaticum (CM) isolated from vacuum-packed (VP) beef against Escherichia coli O157:H7, Listeria monocytogenes and Salmonella Typhimurium. Three CM strains isolated from VP beef with long shelf-life at a temperature near the freezing point were selected. The antimicrobial effect of CM against the pathogenic bacteria cited above was evaluated in co-cultures with or without EDTA at different temperatures. The antimicrobial effect of the cell-free supernatant of CM was also evaluated. The results indicate that the selected strains have an antilisterial activity, which is optimised at low temperatures. Moreover, when the strains were combined with EDTA, it was observed a slight inhibition of gram-negative bacteria (GNB). The inhibition with the EDTA treatment was possibly due to the capacity of this compound to destabilise the outer membrane of GNB, allowing CM to act against these bacteria. Finally, the evaluation of the antimicrobial activity of cell-free supernatant of CM did not highlight any inhibition effect against the tested pathogens. Thus, the antimicrobial activity of these CM strains is not related to bacteriocin production under the studied conditions. [less ▲]

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See detailThe Arabidopsis frd3 mutant phenotype: a new level of complexity
Scheepers, Maxime ULiege; Spielmann, Julien ULiege; Boulanger, Madeleine ULiege et al

Poster (2017, December 07)

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See detailSynthesis and Complexation of Sterically Hindered Imidazolium-2-dithiocarboxylate Ligands
Beltran Alvarez, Tomás Francisco ULiege; Zaragoza, Guillermo; Delaude, Lionel ULiege

Poster (2017, December 07)

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See detailEarly step of BlaR1 signal transduction revealed by Single-Molecule Force Spectroscopy
Dauvin, Marjorie ULiege

Poster (2017, December 07)

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See detailComment peut-on mesurer l’efficacité d’une rééducation de manière écologique? Etudes de cas multiples chez des enfants présentant un trouble du spectre autistique (TSA)
Maillart, Christelle ULiege; Fage, Charles ULiege; Heck, Tamyline et al

in Gatignol, Peggy; Rousseau, Thierry (Eds.) Efficacité des thérapies (2017, December 07)

Introduction Establishing the effectivenss of speech-therapy interventions is a critical issue. Methodological approaches fitted for single-case studies, such as observation baselines, have been used for ... [more ▼]

Introduction Establishing the effectivenss of speech-therapy interventions is a critical issue. Methodological approaches fitted for single-case studies, such as observation baselines, have been used for a long time in interventions addressing oral language or learning impairments. However, when targeting disabled populations, measuring the intervention efficacy is much harder, especially due to their ecological and functional aspects. Objective This work illustrates the efficacy assessment of an intervention based on a technological tool of Alternative and Augmentative Communication (AAC) – named Tiwouh – among children with autism spectrum disorder (ASD). Method Four young participants with ASD have been trained on the Tiwouh AAC plate-form. Their communication behaviors have been evaluated during the activity of reading book with their parents, comparing trained and non-trained books, with or without the support of the AAC tool. Results Thanks to the different experimental conditions of the same task (reading book) implemented as baselines, specific intervention effects have been highlighted. Moreover, some participants actually generalized these benefits to untrained books. Such data will help identifying participants’ profile that can benefit the most from these interventions. Conclusion The present work suggests measuring the effectiveness of an intervention can be achieved regardless of the therapeutic objective, in various situations and with patients exhibiting heterogeneous language profile, by using functional and ecological measures close to the population needs. [less ▲]

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See detailGestion de l'eau agricole de petites et moyennes retenues au Burkina Faso: cas de la retenue d'eau de Mogtedo
Traoré, Farid; Pale, Sié ULiege; Guyon, Francis et al

Conference (2017, December 06)

Detailed reference viewed: 21 (2 ULiège)
See detailCassini UVIS Auroral Observations in 2016 and 2017
Pryor, Wayne R.; Esposito, Larry W.; Jouchoux, Alain et al

Poster (2017, December 06)

In 2016 and 2017, the Cassini Saturn orbiter executed a final series of high-inclination, low-periapsis orbits ideal for studies of Saturn's polar regions. The Cassini Ultraviolet Imaging Spectrograph ... [more ▼]

In 2016 and 2017, the Cassini Saturn orbiter executed a final series of high-inclination, low-periapsis orbits ideal for studies of Saturn's polar regions. The Cassini Ultraviolet Imaging Spectrograph (UVIS) obtained an extensive set of auroral images, some at the highest spatial resolution obtained during Cassini's long orbital mission (2004-2017). In some cases, two or three spacecraft slews at right angles to the long slit of the spectrograph were required to cover the entire auroral region to form auroral images. We will present selected images from this set showing narrow arcs of emission, more diffuse auroral emissions, multiple auroral arcs in a single image, discrete spots of emission, small scale vortices, large-scale spiral forms, and parallel linear features that appear to cross in places like twisted wires. Some shorter features are transverse to the main auroral arcs, like barbs on a wire. UVIS observations were in some cases simultaneous with auroral observations from the Cassini Imaging Science Subsystem (ISS) the Cassini Visual and Infrared Mapping Spectrometer (VIMS), and the Hubble Space Telescope Space Telescope Imaging Spectrograph (STIS) that will also be presented. [less ▲]

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See detailLes plantes tropicales, sources potentielles de médicaments antipaludiques 
Frederich, Michel ULiege

Conference (2017, December 06)

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See detailConstruire des mondes négatifs : une approche médiatique de la dystopie
Stienon, Valérie ULiege

Conference (2017, December 06)

S’il est possible d’établir un lien entre les manifestations littéraires de l’utopie sociale du XIXe siècle et la tradition de l’utopie narrative d’Ancien Régime, c’est généralement en rapprochant les ... [more ▼]

S’il est possible d’établir un lien entre les manifestations littéraires de l’utopie sociale du XIXe siècle et la tradition de l’utopie narrative d’Ancien Régime, c’est généralement en rapprochant les deux corpus sur la base de la conception du bonheur en société, bonheur qui serait tantôt chimérique, tantôt accessible, tantôt déjà perdu. Ce même critère, avec tous les idéaux de réussite et de progrès dont il est porteur, est invoqué pour distinguer les récits d’utopie réalisée de ceux qui relèveraient de son envers : anti-utopie, contre-utopie ou dystopie. La communication propose de clarifier ces terminologies récurrentes et d’insister sur la rupture de constitue au contraire le contexte du XIXe siècle. Pour ce faire, elle s’appuiera sur une définition du récit de monde possible étendue aux dimensions narratives et fictionnelles telles qu’elles sont déterminées par les contraintes médiatiques, c’est-à-dire par les supports, les dispositifs de diffusion et les cadres de réception. À travers un corpus contrasté incluant les romans (Souvestre, Le Monde tel qu’il sera), les récits de presse (séries caricaturales de Robida), les traités politiques ou hygiénistes (Moilin, Paris en l’an 2000) et les productions populaires et de jeunesse (Verne, Paris au XXe siècle), l’étude tentera de déterminer les spécificités médiatiques de la dystopie au XIXe siècle, dont la généricité est éminemment tributaire de ces paramètres matériels et discursifs. Aux critères généralement tenus pour structurants du récit utopique, tels que le point de vue narratif, la vraisemblance, les procédés démonstratifs et la situation cognitive des personnages par rapport au monde représenté, il s’agira donc d’ajouter celui de la mise en circulation des œuvres dans le discours social, qui met en évidence la nécessaire négociation avec un horizon d’attente, perspective importante pour l’étude littéraire des utopies du XIXe siècle. [less ▲]

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See detailFaux-semblants ou certificats ? L'usage des brevets en histoire des technologies
Peters, Arnaud ULiege

Conference (2017, December 06)

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See detailPromoting vaginal distribution of two active siRNA-complexed in liposomes for cervical cancer treatment
Lechanteur, Anna ULiege; Furst, Tania; Delvenne, Philippe ULiege et al

Conference (2017, December 05)

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See detailHow pixel size affects a sediment connectivity index in central Belgium
Cantreul, Vincent ULiege; Bielders, Charles; Calsamiglia, Aleix et al

Conference (2017, December 05)

Connectivity has become an increasingly used concept in hydrological and sediment research. In order to quantify it, various indices have been proposed since the start of the 21st century including the ... [more ▼]

Connectivity has become an increasingly used concept in hydrological and sediment research. In order to quantify it, various indices have been proposed since the start of the 21st century including the index of connectivity developed by Borselli et al. (2008). This index is based on a limited number of factors, the most important one being topography. Sediment connectivity indices values are likely to depend on the digital elevation model (DEM) resolution. The aim of this study was, first, to compare the effect of DEM pixel size (between 0.25 and 10 m, using an UAV) in the Belgian loess belt, a lowland area. We show that the index values were lower when the pixel size decreased (a difference of about 20 % in value between 0.25 and 10 m). In addition, the impact of linear features in the watershed (e.g., grass strip, bank and road) was lower with the largest pixel sizes, and the connectivity pattern was affected with a pixel size of 5 m or more. At lower pixel sizes (1 m or below), some more disconnected regions appeared. These corresponded to zones where there had been water stagnation during and after rainfalls, and was corroborated by field observations. This confirmed the need for a proper resolution according to the objectives of the study. The second aim of this study was to deduce a minimum pixel size for connectivity study, helping local erosion or sedimentation location and consequent land management decisions. In our context, 1 m stands as the optimum DEM resolution. This pixel size permitted to locate all “key areas” in terms of erosion. Very high resolutions (<0.5 m) did not generate much more information, and their calculation time was far greater. [less ▲]

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See detailIntroduzione. Committenza cardinalizia nella Roma barocca: un potere culturale?
Corswarem, Emilie ULiege; Fernandes, Cristina

Conference (2017, December 05)

Emilie Corswarem e Cristina Fernandes hanno sottolineato il ruolo di mediazione svolto dai cardinali nella rete europea di circolazione culturale delle arti e alcuni dei problemi della ricerca sul ... [more ▼]

Emilie Corswarem e Cristina Fernandes hanno sottolineato il ruolo di mediazione svolto dai cardinali nella rete europea di circolazione culturale delle arti e alcuni dei problemi della ricerca sul mecenatismo cardinalizio: la tipologia complessa dei cardinali, la varietà istituzionale e giurisdizionale dei luoghi in cui il loro mecenatismo si esplicitava (collegi, accademie, teatri), il rapporto con il cerimoniale tra perfomance e teatralità e la ricerca di modelli di studio che permettano di andare oltre quanto proposto da Claudio Annibaldi nella visione di un mecenatismo basato sull’interscambio di protezione e di sottomissione. Argomenti, questi, sui quali il dibattito è stato articolato soprattutto durante la discussione successiva alla conferenza. [less ▲]

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See detailInnovative Framework for Risk-Based Maintenance Optimization of Offshore Wind Substructures
Morato Dominguez, Pablo Gabriel ULiege; Nielsen, Jannie S.; Rigo, Philippe ULiege

Poster (2017, December 04)

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See detailShip collision analysis on Offshore Wind Turbines with monopile foundations
Bela, Andreea ULiege; Le Sourne, Hervé; Rigo, Philippe ULiege

Poster (2017, December 04)

Every year the offshore wind industry is expanding and new offshore wind farms are built in deeper waters and closer to the traffic lanes for commercial and passenger ships leading to possible collision ... [more ▼]

Every year the offshore wind industry is expanding and new offshore wind farms are built in deeper waters and closer to the traffic lanes for commercial and passenger ships leading to possible collision events. The consequences of such events can range from minor structural damage to collapse of the Offshore Wind Turbine (OWT), with probability of ship sinking, pollution and at worst, to loss of human lives. Therefore, a collision risk analysis becomes a necessity in the pre-design stage of an offshore wind farm in order to identify the collision scenarios having the greatest probabilities of occurrence but also the most dangerous ones. The objective of this research is to investigate numerically the influence of the impact velocity and wind loads on the OWT’s behaviour when subjected to ship impact. A 5 MW wind turbine was considered for this research and the striking ship was conservatively assumed to be rigid. The description of the Finite Element model is presented as well as the main results obtained. [less ▲]

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See detailAssessment of the deformation by punching and at the baseof an offshore wind turbine jacket impacted by a ship
Pire, Timothée ULiege; Le Sourne, Hervé ULiege; Rigo, Philippe ULiege

Poster (2017, December 04)

Renewable energy production systems are expanding very fast to meet the actual energetic issues. Amongst them, offshore wind is a very promising technology as it provides a nearly constant and high ... [more ▼]

Renewable energy production systems are expanding very fast to meet the actual energetic issues. Amongst them, offshore wind is a very promising technology as it provides a nearly constant and high electricity power. However, this growing number of offshore wind turbines increases the collision risk with vessels that needs to be considered during the design phase. Finite elements are widely used and provide accurate results, but are time-demanding, especially when thousands collision scenarios are investigated in a full collision risk analysis. The authors developed analytical formulations in order to compute quickly the crashworthiness of an offshore wind turbine jacket. From numerical simulations, four deformation modes were identified. The methodology and the main developments performed for two of them, namely the punching and the deformation at the base of the jacket, are presented in this poster. These formulations are then integrated in a general algorithm that includes all four modes to compute the total jacket resistance. [less ▲]

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See detailAnalytical method to assess the crashworthiness of a Floating Offshore Wind Turbine (FOWT)
Echeverry Jaramillo, Sara ULiege; Le Sourne, Hervé; Rigo, Philippe ULiege

Poster (2017, December 04)

With the purpose of using more renewable energies and the decarbonisation of EU, some European countries are implementing floating wind farms, which are closer to traffic lanes. It is important to have a ... [more ▼]

With the purpose of using more renewable energies and the decarbonisation of EU, some European countries are implementing floating wind farms, which are closer to traffic lanes. It is important to have a complete scope of the structure’s response to a ship impact, in order to implement a risk assessment of the floating wind turbines. In this regard, finite elements solvers are widely used nowadays, which provide accurate results but are time-demanding, not suitable for an early design stage. A faster and reliable method is required in order to study a wide range of parameters: impact velocity, impact location, wind-wave-structure interaction, mooring system response and overall dynamics. This poster presents the methodology used to develop an analytical method to compute the crashworthiness of FOWT. [less ▲]

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Peer Reviewed
See detailOptimum split-band parameters for phase offset retrieval
Libert, Ludivine ULiege; De Rauw, Dominique ULiege; Barbier, Christian ULiege

in IEEE International Geoscience and Remote Sensing Symposium (2017, December 04)

The potential of Split-Band processing to determine the absolute phase of an interferometric pair of SAR images has been demonstrated in previous studies. In this work we propose a new approach based on ... [more ▼]

The potential of Split-Band processing to determine the absolute phase of an interferometric pair of SAR images has been demonstrated in previous studies. In this work we propose a new approach based on the joint use of Split-Band Interferometry and SAR Interferometry for the phase leveling of disconnected regions of an unwrapped interferogram. In this paper a new selector of frequency-persistent scatterers is presented. In order to demonstrate the applicability of the method we propose an artificial disconnection of the regions to validate our results without any ground based measurements. The presented method is tested on TerraSAR-X images acquired with a range bandwidth of 150 MHz over the Nyamuragira volcano in the African region of the Kivu Rift. Several combinations of split parameters are applied and investigated to determine the best configuration for this application. [less ▲]

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See detailCitizen Science and its promotion at the European Commission Level: Toward a changing conception of public engagement
Macq, Hadrien ULiege; Tancoigne, Élise

Conference (2017, December 04)

Through this presentation, we analyse the justifications for the recent promotion of Citizen Science at the European Commission level. We also analyse the genesis of this emerging discourse on Citizen ... [more ▼]

Through this presentation, we analyse the justifications for the recent promotion of Citizen Science at the European Commission level. We also analyse the genesis of this emerging discourse on Citizen Science. We therefore link its promotion to previous forms of public engagement that have been promoted by the European Commission, and provide insights on the new conception of science-society relationship that is developing. [less ▲]

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See detailVLTI/GRAVITY observations of the young star βPictoris
Defrere, Denis ULiege; Di Matteo, P.; Herpin, F. et al

in SF2A-2017: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics (2017, December 01)

The nearby young star β Pictoris is surrounded by the archetypal debris disc, which provides a unique window on the formation and early evolution of terrestrial planets. While the outer disc has been ... [more ▼]

The nearby young star β Pictoris is surrounded by the archetypal debris disc, which provides a unique window on the formation and early evolution of terrestrial planets. While the outer disc has been extensively studied since its discovery in 1984, very little is currently known about the inner planetary system (<4AU). Recently, accurate squared visibilities obtained with VLTI/PIONIER revealed the presence of resolved circumstellar emission with an integrated brightness amounting to approximately 1.4% of the stellar brightness in H band. However, it is not clear whether this excess emission originates from thermal emission, reflected light from hot dust grains located in the innermost regions of the planetary system, or is simply due to forward scattering by dust grains located further away (but still within the PIONIER field-of-view, i.e., close to the line of sight). In this paper, we present medium-resolution K-band observations of βPic obtained with VLTI/GRAVITY during science verification. The goals of these observations are to better constrain the temperature of the grains (and hence their location and chemical composition) and to showcase the high-precision capabilities of GRAVITY at detecting faint, close-in circumstellar emission. [less ▲]

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Peer Reviewed
See detailLe moment d’apparition de la fatigue mentale varie-t-il en fonction de l’âge ? Détermination du Time-on-Task effect chez des jeunes, des middle-age, et des âgés.
Gilsoul, Jessica ULiege; Collette, Fabienne ULiege

Poster (2017, December 01)

Introduction. La fatigue mentale peut survenir chez des personnes jeunes après un certain temps de tâche (Time-on-Task effect). Wang et al. (2016) ont mis en évidence une augmentation des temps de ... [more ▼]

Introduction. La fatigue mentale peut survenir chez des personnes jeunes après un certain temps de tâche (Time-on-Task effect). Wang et al. (2016) ont mis en évidence une augmentation des temps de réaction de jeunes personnes entre les 40 premières et les 40 dernières minutes d’une tâche Stroop de 160min. Notre étude a pour but de répliquer les résultats de Wang et al. (2016) et de tester pour la première fois le Time-on-Task effect chez des middle-age et des âgés. Méthode. Vingt-et-un jeunes (MÂge=21,29), 16 middle-age (MÂge = 49,94), et 17 âgés (MÂge = 65,06) ont réalisé une tâche Stroop durant 160min. Celle-ci comprenait des items facilitateurs (FA), interférents (I), et neutres (NE), ces derniers apparaissant systématiquement un item sur deux. Les 160min. ont été divisées en huit blocs de 20min. avec élimination du Bloc 0 (Bloc d’habituation). Des ANOVAs 3(Groupe : Jeune, Middle-age, Âgé) X 7(Bloc : 1,…,7) à mesures répétées ont été réalisées sur les moyennes et les coefficients de variation (CV) des temps de réaction (TR) des trois types d’items. Résultats. Moyenne. Les jeunes montrent une augmentation de leur TR entre le 1er et le 5ème Bloc (p=,03) sur les items NE alors que cette augmentation survient lors du Bloc 4 pour les middle-age (p=,006) et les âgés (p=,04). CV. Les jeunes montrent une augmentation de leur CV entre le Bloc 1 et le bloc 7 (p=,002) sur les items NE alors que celle-ci survient lors du Bloc 6 pour les middle-age (p=,02). En revanche, le CV des âgés ne varie pas en fonction des blocs. Discussion. La fatigue mentale mesurée grâce au Time-on-Task dans le vieillissement semble se manifester par un ralentissement général du traitement de l’information à mesure de l’avancée sur la tâche : les middle-age et les âgés étant plus précocement fatigués que les sujets jeunes. En revanche, alors que les jeunes et les middle-age semblent affectés au niveau de leur CV, le vieillissement plus avancé semble préserver la variabilité intra-individuelle du Time-on-Task. De façon intéressante, alors que les items FA et I semblent moins sensibles à la fatigue mentale, les trois groupes ont montré un ralentissement significatif de leur vitesse sur les items NE à mesure du Time-on-Task. Etant donné la prévisibilité des NE dans notre paradigme, nous faisons l’hypothèse que la fatigue mentale survient plus facilement lorsque l’individu peut systématiquement anticiper l’information à traiter, le menant à un désengagement de la tâche. [less ▲]

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