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See detailLes cuvettes oasiennes du Niger oriental: entre pratiques foncières et cadre législatif
Malam Boukar, Awa Krou; Yamba, Boubacar; Andres, Ludovic ULg et al

in Revue Internationale des Sciences de Développement (2016), 4(6), 376-388

Despite the new context of the land-law with the land committee, the property owner depends on the traditional law. This paper shows the land system in the south east of the Niger. Nine basin oasis have ... [more ▼]

Despite the new context of the land-law with the land committee, the property owner depends on the traditional law. This paper shows the land system in the south east of the Niger. Nine basin oasis have selected in function of the food system and the proof of the phreatic table. An investigation with 105 producters has showed the description and the analysis of the land access and the conflicts. The analysis shows the strong influence of traditional authorities and the lack of operationalization of COFOB. Finally, the conflicts are generalized between many actors (farmers, pastoralists and agro-pastoralists) and settlement is done mainly by conciliation. Furthermore, the disparity between the men and the women land access is very important. [less ▲]

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See detailOn the compatibility equations in geometrically exact beam finite element
Sonneville; Bruls, Olivier ULg; Bauchau, Olivier A.

in Proceedings of the 12th International Conference on Multibody Systems, Nonlinear Dynamics and Control (MSNDC) within the ASME/IDETC/CIE Conference (2016, August)

This paper discusses the compatibility equations which relate the velocity field and the strain field in geometrically exact beam theory. The analysis is carried out in the context of intrinsic equations ... [more ▼]

This paper discusses the compatibility equations which relate the velocity field and the strain field in geometrically exact beam theory. The analysis is carried out in the context of intrinsic equations, namely the dynamic equilibrium equations are formulated in terms of velocity and strain only. In addition to the well established objectivity and path-independence requirements of the spatial discretization, these compatibility equations show that a consistent spatial interpolation of the velocity field should depend on the curvature of the beam, including initial curvature and curvature from the deformation, and it is shown that this consistency is connected to the ability of the element to represent rigid body motion velocity. A two node interpolation scheme is studied and it appears that, as the element gets smaller under mesh refinement, the effect of this dependency reduces, leading eventually to the classical linear shape functions. [less ▲]

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See detailObservation of the surface circulation of the Mediterranean Sea from space
Karimova, Svetlana ULg

in Ouwehand, L. (Ed.) Proc. ESA Living Planet Symposium 2016 (2016, August)

In the present work mesoscale eddies of the Western Mediterranean are being investigated by means of thermal imagery and altimetry data. Comparison of 1489 anticyclonic and 782 cyclonic eddy ... [more ▼]

In the present work mesoscale eddies of the Western Mediterranean are being investigated by means of thermal imagery and altimetry data. Comparison of 1489 anticyclonic and 782 cyclonic eddy manifestations found in sea surface temperature (SST) imagery on an analysis of a 3-year-long dataset (covering the period from 2011 to 2013) with corresponding sea level anomaly (SLA) fields showed that only anticyclonic eddies exceeding ca. 70 km in diameter can be more or less sustainably manifested in the fields of SLA and its derivatives (such as relative vorticity). Detection of cyclonic eddies on base of SLA data, presumably due to the small spatial and temporal scales of such eddies and their non-geostrophic nature, is problematic. [less ▲]

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See detailLearning to Dissect. The Technologies of Touch in the Renaissance
Von Hoffmann, Viktoria ULg

Conference (2016, August)

The aim of this paper is to examine the part played by the sense of touch in anatomical practices and discourses in Renaissance Italy. As dissections became widespread in the sixteenth century, a sensory ... [more ▼]

The aim of this paper is to examine the part played by the sense of touch in anatomical practices and discourses in Renaissance Italy. As dissections became widespread in the sixteenth century, a sensory approach to the inside of the dead body (anatomia sensibilis), through the anatomist’s eye and touch, was thought to be the surest way of uncovering truths about the living body. Carlino, Kusukawa, Mandressi, Park, and Sawday have convincingly emphasized the importance of sight and visual experience in the production and communication of anatomical knowledge, through the emergence of an “autoptic vision” (Sawday) and more broadly of a new “visual argument” (Kusukawa) for the early modern scientific study of Nature. Yet the practice of anatomy engages haptic as much as visual experience: when dissecting, the anatomist cuts through the skin and touches the inside of the dead body, with his scalpel and his hands, in order to enhance his knowledge of the living body. Manual skills thus became a source of insight as they helped to unveil the real state of the body’s inside. Many medical students were therefore eager not only to attend but also to perform dissections, in order to get a better grasp of the functioning of the human body. Using records from anatomical demonstrations and notes from medical students, this paper seeks to explore the technologies of touch that were displayed when medical students were learning to dissect. What was the part played by the sense of touch in educational practices, as well as in the production and communication of anatomical knowledge? How did the students cope with the disgust which would arise from the tactile contact with blood and other bodily fluids? How was the dissecting hand of the anatomist presented by students in their descriptions of anatomical lessons? What was the importance of the practitioner’s touch in the process of reading the body’s inner reality? Was the sense of touch used as a rhetorical strategy to express authority and claim expertise? In a word: did Vesalian anatomy and the new anatomy theatre involve a new relationship with touch (as well as observation, as has been argued)? Did a new ‘tactile argument’ also arise in this context? [less ▲]

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See detailBovine leukemia virus becomes established in dairy herds before the first lactation
Merlini, Ramiro; Gutiérrez, Geronimo; Alvarez, Irene et al

in Archives of Virology (2016), 161

In this work, we studied seven groups of pregnant heifers from a consortium of dairy farms heavily infected with bovine leukemia virus (BLV). ELISA testing showed that the seroprevalence ranges of BLV in ... [more ▼]

In this work, we studied seven groups of pregnant heifers from a consortium of dairy farms heavily infected with bovine leukemia virus (BLV). ELISA testing showed that the seroprevalence ranges of BLV in heifers between 36.1 and 66.5 %. No significant differences in proviral load were found when comparing heifers with adult cattle. Before their first delivery, more than 9.8 % of heifers show a high proviral load. Because BLV infection can occur during the first two years of life, the rationale of any strategy should be to take action as early as possible after birth. [less ▲]

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See detailScaling up strategies of the chronic respiratory disease programme of the European Innovation Partnership on Active and Healthy Ageing (Action Plan B3: Area 5).
Bousquet, J.; Farrell, J.; Crooks, G. et al

in Clinical and translational allergy (2016), 6

Action Plan B3 of the European Innovation Partnership on Active and Healthy Ageing (EIP on AHA) focuses on the integrated care of chronic diseases. Area 5 (Care Pathways) was initiated using chronic ... [more ▼]

Action Plan B3 of the European Innovation Partnership on Active and Healthy Ageing (EIP on AHA) focuses on the integrated care of chronic diseases. Area 5 (Care Pathways) was initiated using chronic respiratory diseases as a model. The chronic respiratory disease action plan includes (1) AIRWAYS integrated care pathways (ICPs), (2) the joint initiative between the Reference site MACVIA-LR (Contre les MAladies Chroniques pour un VIeillissement Actif) and ARIA (Allergic Rhinitis and its Impact on Asthma), (3) Commitments for Action to the European Innovation Partnership on Active and Healthy Ageing and the AIRWAYS ICPs network. It is deployed in collaboration with the World Health Organization Global Alliance against Chronic Respiratory Diseases (GARD). The European Innovation Partnership on Active and Healthy Ageing has proposed a 5-step framework for developing an individual scaling up strategy: (1) what to scale up: (1-a) databases of good practices, (1-b) assessment of viability of the scaling up of good practices, (1-c) classification of good practices for local replication and (2) how to scale up: (2-a) facilitating partnerships for scaling up, (2-b) implementation of key success factors and lessons learnt, including emerging technologies for individualised and predictive medicine. This strategy has already been applied to the chronic respiratory disease action plan of the European Innovation Partnership on Active and Healthy Ageing. [less ▲]

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See detailProofing & Reduction Strategies Used by Emergency Residents to Manage Fatigue-related Risk
Berastegui, Pierre ULg; Ghuysen, Alexandre ULg; Nyssen, Anne-Sophie ULg

Poster (2016, July 29)

Fatigue and sleep loss are typically associated with psychomotor and cognitive impairment resulting in poorer task performance. Most of these studies are conducted in controlled settings and involve the ... [more ▼]

Fatigue and sleep loss are typically associated with psychomotor and cognitive impairment resulting in poorer task performance. Most of these studies are conducted in controlled settings and involve the completion of experimental tasks. Only a few field studies involving exhausted residents have been conducted over the past decade, and they yielded to contradictory results (Ellman et al., 2004). One of the key factors that could be involved in the non-linear relationship between fatigue and performance in specific work context reside in the mobilization of Fatigue Proofing Strategies. FPS are adaptive and protective risk-reduction behaviors that improve the resilience of a system of work (Dawson et al., 2012). In this study, we aimed to identify and classify proofing strategies mobilized by EMS residents using an inductive content analysis approach. EMS residents reported a range of strategies for reducing subjective level of sleepiness (reduction strategies, n=15) or managing its consequences (proofing strategies, n=17). Content analysis yielded to three sub-categories of proofing strategies: Behavioral Compensation (n=8), Error’s Opportunity Reduction (n=5) and Error’s Consequences Mitigation (n=4). Our results show that EMS residents use both types of strategies although none of the proofing strategies were part of their training program. Despite the current informal use, there is significant potential for implementation of more formal processes. [less ▲]

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See detailL'Alliance stratégique entre les acteurs étatiques et non-étatiques au Moyen-Orient : Le cas de l'Alliance entre l'Iran, la Syrie et le Hezbollah.
Bayramzadeh, Kamal ULg

Conference (2016, July 28)

L’Alliance stratégique entre les acteurs non-étatiques et étatique au Moyen-Orient : le cas du Hezbollah libanais avec l’Iran et la Syrie et son rôle dans le conflit syrien ; Depuis 1979, il y a une ... [more ▼]

L’Alliance stratégique entre les acteurs non-étatiques et étatique au Moyen-Orient : le cas du Hezbollah libanais avec l’Iran et la Syrie et son rôle dans le conflit syrien ; Depuis 1979, il y a une alliance entre le régime iranien et le régime syrien. Le moteur principal de cette alliance a été au départ l’hostilité de ces deux régimes aux Etats-Unis, au régime irakien (Saddam Hussein), et à Israël. Mais après la chute du régime irakien en 2003, il y a eu un changement dans les relations entre ces deux pays et l’Irak, mais l’hostilité à l’égard des Etats-Unis et de l’Etat hébreu a continué. Le caractère durable des relations entre l’Iran et la Syrie est lié aux facteurs stratégique et géopolitique et notamment à l’existence de l’ennemi commun et aux menaces sécuritaires. Dans le conflit syrien, les acteurs de cette alliance en particulier l’Iran a joué un rôle important. Pour comprendre la position de l’Iran au sujet du conflit syrien, il est important d’observer que depuis la Révolution de 1979, la Syrie occupe une place très importante dans la stratégie diplomatique régionale de l’Iran, car la Syrie permet au régime iranien d’accéder au monde arabe et de jouer en particulier un rôle dans la vie politique libanaise par le biais du Hezbollah : la fondation de ce parti politique est l’une des conséquences de la politique d’exportation de la révolution iranienne. Selon le régime iranien, la Syrie, le Hezbollah et l’Iran font partie de « l’axe de la résistance » à Israël. Dans ce sens la Syrie joue un rôle important dans les relations entre l’Iran et le Hezbollah qui est le bras armé du régime iranien au Liban. C’est pourquoi la Syrie est la profondeur stratégique de l’Iran dans sa rivalité avec l’Etat hébreu. De ce fait, le renversement du régime syrien contribuerait à la diminution de l’influence de l’Iran. L’Iran affiche sans tarder un appui visible (par l’envoi de matériels et de personnels) au régime de Damas car il craint les répercutions d’un effondrement de son allié principal. L’éviction du clan alaouite risquerait de mettre en place un pouvoir à majorité sunnite pas favorable au Hezbollah, ni à la République islamique. Dans cette présentation, nous allons d’abord voir le rôle du Hezbollah au Liban ainsi que ses fondements idéologiques. Ensuite nous allons analyser sa place dans la stratégie régionale de l’Iran et son rôle dans l’Alliance avec l’Iran et la Syrie notamment dans le conflit syrien. [less ▲]

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See detailEffect of Mechanical Loading on Peri-Implant Bone Remodeling Measured with Time-Lapsed Imaging and Finite Element Analysis
Li, Zihui; Betts, Duncan; Kuhn, Gisela et al

Conference (2016, July 28)

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See detailGroundwater flow and transport modelling at regional scale: lessons learned from different applications in the Walloon Meuse basin
Dassargues, Alain ULg; Goderniaux, Pascal; Orban, Philippe ULg et al

Conference (2016, July 28)

An overview is proposed of the recent groundwater modelling works, at the groundwater body scale, performed by the Hydrogeology & Environmental Geology team of the University of Liège. The developed ... [more ▼]

An overview is proposed of the recent groundwater modelling works, at the groundwater body scale, performed by the Hydrogeology & Environmental Geology team of the University of Liège. The developed modelling tools are built in the general objective of improving our understanding and management, at short, middle and long terms, of the groundwater bodies. The general strategy to be followed implies that conceptualization, parameterization and calibration must be adapted to the actual objectives of each model (Wildemeersch et al., 2014). 3 specific applications are illustrated involving two main groundwater bodies: - application of the HFEMC method (Wildemeersch et al., 2010) within the SUFT3D code for groundwater flow modelling of the ‘Synclinorium of Dinant’ (Orban et al., 2010 and Brouyère et al., 2011); - application of the HFEMC method and the SUFT3D code for the nitrate trends (Batlle-Aguilar et al., 2007) simulations in the Geer basin (Orban et al., 2010) for different scenarios of nitrate inputs; - application of the HGS integrated model for assessing the impact of climate change on the groundwater reserves in the Geer basin (Brouyère et al., 2004, Goderniaux et al., 2009 and 2011) with quantification and comparison of the different uncertainty sources (Goderniaux et al., 2015) Lessons and perspectives are learned and proposed from these modelling experiences at the scale of the groundwater body. [less ▲]

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See detailHow groundwater interactions can influence UPSH (Underground Pumping Storage Hydroelectricity) operations
Bodeux, Sarah ULg; Pujades, Estanislao ULg; Orban, Philippe ULg et al

Conference (2016, July 28)

In the current energy grid, renewable energy has an increasing role to play. However, their intermittence cannot afford to regulate the produced electricity according to the irregular demand (Evans et al ... [more ▼]

In the current energy grid, renewable energy has an increasing role to play. However, their intermittence cannot afford to regulate the produced electricity according to the irregular demand (Evans et al., 2012). Pumped Storage Hydroelectricity (PSH) is a well-known efficient technology to store and release electricity according to the demand needs but appropriate potential new sites are getting scarce (Steffen, 2012). An innovative alternative consists in using abandoned mines as lower reservoir of an Underground Pumping Storage Hydroelectricity (UPSH) plant. In such configuration, large amount of water will be pumped or injected in underground cavities, creating subsequently head oscillations in the surrounding aquifers. Consequently, this seepage occurring between the considered cavity and the varying groundwater heads in the surrounding geological medium may influence the efficiency of the UPSH plant but also the magnitude of the potential impacts on the groundwater resources. A hybrid 3D finite element mixing cell method (Brouyère et al., 2009) is used to simulate numerically the use of a representative UPSH cavity and calculate the induced changes in groundwater heads in the surrounding geological medium. Different scenarios are computed varying parameter values (hydrogeological and lower reservoir characteristics), boundary conditions, and pumping/injection time-sequences. By analyzing the computed piezometric heads at different distances from the underground reservoir, the magnitude of the aquifer response to pumping storage operations is assessed. The most expected and noticeable effect is the oscillation of groundwater levels. The existence a mean pseudo/ dynamic steady-state and the required time to reach it are also determined. The head difference and its time evolution between the cavity and the surrounding medium is triggering the leakage of groundwater into the cavity or the contrary. The resulting effects on the UPSH plant efficiency can be estimated. Combining these outcomes, some feasibility criteria of this type of projects are identified. Going into practice, further models should include more in de-tails local and specific geometrical and hydrogeolog-ical data of the considered old mine cavities used as lower reservoir. This kind of modelling approach can be used as a first approach for determining how the aquifer will response to short and long term changes in UPSH pumping/injection schemes. [less ▲]

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See detailRepetition and Negation as Dialogic Devices in Caryl Phillips's "Northern Lights"
Tunca, Daria ULg

Conference (2016, July 28)

Detailed reference viewed: 15 (2 ULg)
See detailBiofilm fermentation for the production of insect pathogenic fungi
Bawin, Thomas ULg; Francis, Frédéric ULg; Delvigne, Frank ULg

Poster (2016, July 27)

Currently, integrated pest management that aims to reduce the use of synthetic insecticides by considering all appropriate alternative methods, is promoted. In that context, insect pathogenic fungi could ... [more ▼]

Currently, integrated pest management that aims to reduce the use of synthetic insecticides by considering all appropriate alternative methods, is promoted. In that context, insect pathogenic fungi could be developed as biopesticides in two ways: spores but also metabolites that are recognized as virulence factors. Targeting adequate fermentation method is an important requirement to obtain fungal products (i.e. spores, enzymes and metabolites) of biotechnological interest. The 'Microbial Processes and Interactions' laboratory has developed an innovative fermentation technology (referred to as ‘biofilm fermentation’) involving the growth of fungal biomass on inert supports that are immersed in a liquid nutrient medium. Confining fungal biomass on immersed inert structures provides a hybrid production system aiming to keep a solid-state physiology for sporulation and secretion of metabolites while controlling fermentation parameters. This research project proposes to transfer this technology to culture insect pathogenic fungi, such as Metarhizium anisopliae, for the production of spores and insecticidal metabolites. Development stages include the qualitative and quantitative characterization of its impact on insecticidal products as well as scale-up to industrial level. [less ▲]

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See detailL’instrumentation de la mémoire en Belgique : Comment les autorités publiques francophones et flamandes influencent-elles le jeu mémoriel ?
Nossent, Jérôme ULg

Conference (2016, July 27)

Les études mémorielles identifient généralement les mémoires collectives comme transmises au travers de groupes particuliers (familles, collectivités, nations,…et communautés). Parmi ces groupes, certains ... [more ▼]

Les études mémorielles identifient généralement les mémoires collectives comme transmises au travers de groupes particuliers (familles, collectivités, nations,…et communautés). Parmi ces groupes, certains peuvent se prévaloir de l’institutionnalisation des mémoires, faisant d’elles des mémoires collectives officielles, par le biais de politiques mémorielles. Les autorités publiques peuvent effectivement être considérées comme initiatrices de telles politiques, recourant pour ce faire à de multiples instruments mémoriels : commémorations, lois dites « mémorielles » ou autres instruments législatifs. En mars 2009, la Communauté française de Belgique s’est dotée d’un tel instrument mémoriel, le « décret mémoire ». Celui-ci vise à la transmission de la mémoire de crimes d’envergure (dont les génocides) et de la résistance à leurs instigateurs, par la promotion de certains organismes et activités. De l’autre côté de la frontière linguistique belge, la Communauté flamande s’est dotée, en 2008, d’un « Comité spécial d'éducation à la mémoire ». Ce Comité spécial organise la promotion d'activités en lien avec diverses mémoires. Les approches adoptées par les autorités publiques de part et d’autre de la frontière linguistique peuvent toutefois être étudiées en vis-à-vis, dans une perspective comparée. En interrogeant les similitudes et les divergences, les rôles des autorités publiques, les moyens et les buts poursuivis, la communication cherche à savoir si les cadres institués permettent l’égal soutien de mémoires plurielles ou, au contraire, s’ils rendent l’accès à celui-ci plus inégalitaires. [less ▲]

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See detailPolitiques mémorielles et contraintes juridiques
Grandjean, Geoffrey ULg

Conference (2016, July 27)

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See detailAharonov-Bohm oscillations of bosonic matter-wave beams in the presence of disorder and interaction
Chrétien, Renaud ULg; Dujardin, Julien; Petitjean, Cyril ULg et al

Poster (2016, July 27)

We study the one-dimensional (1D) transport properties of an ultracold gas of Bose-Einstein condensed atoms through Aharonov-Bohm (AB) rings. Our system consists of a Bose-Einstein condensate (BEC) that ... [more ▼]

We study the one-dimensional (1D) transport properties of an ultracold gas of Bose-Einstein condensed atoms through Aharonov-Bohm (AB) rings. Our system consists of a Bose-Einstein condensate (BEC) that is outcoupled from a magnetic trap into a 1D waveguide which is made of two semi-infinite leads that join a ring geometry exposed to a synthetic magnetic flux φ. We specifically investigate the effects both of a disorder potential and of a small atom-atom contact interaction strength on the AB oscillations. The main numerical tools that we use for this purpose are a mean-field Gross-Pitaevskii (GP) description and the truncated Wigner (tW) method. We find that a correlated disorder suppress the AB oscillations leaving thereby place to Aronov-Al’tshuler-Spivak (AAS) oscillations. The competition between disorder and interaction leads to a peak inversion at Φ = π, that is a signature of a coherent backscattering (CBS) peak inversion. This is confirmed by truncated Wigner simulations. [less ▲]

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See detailEnd-to-end simulations of the E-ELT/METIS coronagraphs
Carlomagno, Brunella ULg; Absil, Olivier ULg; Kenworthy, Matthew et al

in Marchetti, E.; Close, L.; Véran, J.-P. (Eds.) Adaptive Optics Systems V (2016, July 27)

The direct detection of low-mass planets in the habitable zone of nearby stars is an important science case for future E-ELT instruments such as the mid-infrared imager and spectrograph METIS, which ... [more ▼]

The direct detection of low-mass planets in the habitable zone of nearby stars is an important science case for future E-ELT instruments such as the mid-infrared imager and spectrograph METIS, which features vortex phase masks and apodizing phase plates (APP) in its baseline design. In this work, we present end-to-end performance simulations, using Fourier propagation, of several METIS coronagraphic modes, including focal-plane vortex phase masks and pupil-plane apodizing phase plates, for the centrally obscured, segmented E-ELT pupil. The atmosphere and the AO contributions are taken into account. Hybrid coronagraphs combining the advantages of vortex phase masks and APPs are considered to improve the METIS coronagraphic performance. [less ▲]

Detailed reference viewed: 14 (0 ULg)