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See detailContextualisation de la pensée d'Albert Demaret et réflexion autour du déni anorexique
Mormont, Christian ULg

in Englebert, Jérôme; Follet, Valérie (Eds.) Adaptation. Essai collectif à partir des paradigmes éthologiques et évolutionnistes. (2016, February)

Contextualization of thoughts and works of Albert Demaret in the field of psychiatry and ethology. About the disavowal in anorectic female.

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See detailDecision Making from Confidence Measurement on the Reward Growth using Supervised Learning: A Study Intended for Large-Scale Video Games
Taralla, David ULg; Qiu, Zixiao ULg; Sutera, Antonio ULg et al

in Proceedings of the 8th International Conference on Agents and Artificial Intelligence (ICAART 2016) - Volume 2 (2016, February)

Video games have become more and more complex over the past decades. Today, players wander in visually and option- rich environments, and each choice they make, at any given time, can have a combinatorial ... [more ▼]

Video games have become more and more complex over the past decades. Today, players wander in visually and option- rich environments, and each choice they make, at any given time, can have a combinatorial number of consequences. However, modern artificial intelligence is still usually hard-coded, and as the game environments become increasingly complex, this hard-coding becomes exponentially difficult. Recent research works started to let video game autonomous agents learn instead of being taught, which makes them more intelligent. This contribution falls under this very perspective, as it aims to develop a framework for the generic design of autonomous agents for large-scale video games. We consider a class of games for which expert knowledge is available to define a state quality function that gives how close an agent is from its objective. The decision making policy is based on a confidence measurement on the growth of the state quality function, computed by a supervised learning classification model. Additionally, no stratagems aiming to reduce the action space are used. As a proof of concept, we tested this simple approach on the collectible card game Hearthstone and obtained encouraging results. [less ▲]

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See detailFramework for Threat Based Failure Rates in Transmission System Operation
Perkin, Samuel; Bjornsson, Gudjon; Baldursdottir, Iris et al

in Framework for Threat Based Failure Rates in Transmission System Operation (2016, February)

Reliability of electrical transmission systems isvpresently managed by applying the deterministic N-1 criterion, or some variant thereof. This means that transmission systems are designed with at least ... [more ▼]

Reliability of electrical transmission systems isvpresently managed by applying the deterministic N-1 criterion, or some variant thereof. This means that transmission systems are designed with at least one level of redundancy, regardless of the cost of doing so, or the severity of the risks they mitigate. In an operational context, the N-1 criterion provides a reliability target but it fails to accurately capture the dynamic nature of short-term threats to transmission systems. Ongoing research aims to overcome this shortcoming by proposing new probabilistic reliability criteria. Such new criteria are anticipated to rely heavily on component failure rate calculations. This paper provides a threat modelling framework, using the Icelandic transmission system as an example, highlighting the need for improved data collection and failure rate modelling. The feasibility of using threat credibility indicators to achieve spatio-temporal failure rates, given minimal data, is explored in a case study of the Icelandic transmission system. The paper closes with a discussion on the assumptions and simplifications that are implicitly made in the formulation, and the additional work required for such an approach to be included in existing practices. Specifically, this paper is concerned only with short term and real-time management of electrical transmission systems. [less ▲]

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See detailCharacterization of GPR101 transcripts structure, expression and signaling
Trivellin, G; Bjelobaba, I; Daly, Adrian ULg et al

in Abstract book - Keystone Symposia on GPCRs (2016, February)

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See detailCommuniquer pour mieux gérer les ressources naturelles, cas pilote du bassin versant de la rivière Lukaya.
Jacmain, Céline; Rosillon, Francis ULg

in Elongo, V.L.; Wildi, Walter; Onaotsho, K. (Eds.) et al Actes du séminaire interdisciplinaire et interuniversitaire : Communication environnementale dans les pays en développement : enjeux, modèles, applications. (2016, February)

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See detailPrise en charge des patients en état de conscience altérée. Approche kinésithérapique par stimulations transcrâniennes non invasives et attèles souples
Martens, Géraldine ULg

in Kinésithérapie, la revue. Vol 16 - n°170 (2016, February)

Ces dernières années, grâce au perfectionnement des techniques de réanimation, le nombre de patients survivant à leur lésion cérébrale a fortement augmenté. Tandis que certains se rétablissent rapidement ... [more ▼]

Ces dernières années, grâce au perfectionnement des techniques de réanimation, le nombre de patients survivant à leur lésion cérébrale a fortement augmenté. Tandis que certains se rétablissent rapidement, d’autres traversent différents états de conscience altérée (coma, état végétatif/non répondant ou état de conscience minimale) avant de récupérer ou non un état de conscience normal. Les patients en état de conscience altérée représentent un problème majeur tant au niveau diagnostique, pronostique, thérapeutique, qu’au niveau de leur prise en charge quotidienne. Diverses possibilités de traitements pharmacologiques et non pharmacologiques ont été étudiées. Les techniques des stimulations transcrâniennes à courant continu (tDCS) augmentent l’excitabilité corticale et le flux sanguin cérébral régional. La plasticité cérébrale s’en voit améliorée, ce qui module l’activité corticale et donc l’activité fonctionnelle des aires se trouvant sous l’anode. Une plasticité cérébrale est parfois encore possible, même au stade chronique. Un des problèmes majeurs de ces patients est la spasticité qui cause diverses complications (rétractions musculaires, subluxations et luxations articulaires, escarres, positions vicieuses) en plus du facteur algique. Ces complications sont d’autant plus importantes que ces patients sont voués à rester alités. La kinésithérapie permet de réduire les complications liées à la spasticité mais est parfois insuffisante et la prise d’antispastiques est inévitable. La technique la plus couramment utilisée est l’étirement passif : son efficacité dans la réduction des phénomènes spastiques est clairement reconnue. Par ailleurs, des études ont montré l’intérêt de la mise en place d’une attèle souple au niveau du membre supérieur chez les patients spastiques. L’avantage de cette technique est sa simplicité d’utilisation. Cette attelle se base sur le principe de saturation du système proprioceptif cutané à l’aide d’un tissu élastique, ceci simultanément à un rééquilibrage des antagonistes. De nombreuses pistes restent encore à explorer pour une prise en charge optimale des patients cérébrolésés. [less ▲]

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See detailHow heterogeneity of the K-field influences a heat plume in a shallow alluvial aquifer: responses from a heat tracer test
Klepikova, Maria; Jamin, Pierre ULg; Orban, Philippe ULg et al

in Abstract book (2016, January 26)

Simultaneous solute and heat tracer test provides essential information for a reliable assessment of low temperature geothermal systems. The actual efficiency of ‘open systems’, including heat storage ... [more ▼]

Simultaneous solute and heat tracer test provides essential information for a reliable assessment of low temperature geothermal systems. The actual efficiency of ‘open systems’, including heat storage projects, is strongly affected by the heterogeneity of the hydraulic conductivity field (K-field). It could be also useful for assessing the cumulative impacts of numerous projects in urban areas on the groundwater resources. Using field data from a solute and heat tracer test conducted in the alluvial aquifer of the Meuse River (Belgium), an inverse problem of parameter estimation is solved. The tracing experiment consisted in simultaneously injecting heated water and a dye tracer in a piezometer and monitoring the evolution of groundwater temperature and tracer concentration in the recovery well and in monitoring wells. To get insights in the 3D characteristics of the heat plume, an arrangement of three transects of observation wells was used. The breakthrough curves measured in the recovery well showed that heat transfer in the alluvial aquifer is slower and more dispersive than solute transport. Recovery is very low for heat while in the same time it is measured as relatively high for the solute tracer. This is due to the fact that heat transport is a thermal diffusion dominated process. For conditions corresponding to high Peclet numbers, the hydraulic conductivity is the primary calibration parameter for predicting heat plume distribution. Heat diffusion is larger than molecular diffusion, implying that exchange between groundwater and the porous medium matrix is far more significant for heat than for solute tracers. [less ▲]

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See detailHydrogeological conditions required for Underground Pumping Storage Hydroelectricity (UPSH) in old mines
Bodeux, Sarah ULg; Pujades, Estanislao ULg; Orban, Philippe ULg et al

in Abstract book (2016, January 26)

Renewable energy sources, because of their intermittence, could not afford a stable production and an adequate variability according to the energy demand. Underground Pumped Storage Hydroelectricity (UPSH ... [more ▼]

Renewable energy sources, because of their intermittence, could not afford a stable production and an adequate variability according to the energy demand. Underground Pumped Storage Hydroelectricity (UPSH) using abandoned mine works is an interesting alternative, in flat regions, to store energy during low demand periods by pumping water from an underground mine to an upper reservoir. From the hydrogeological point of view, two considerations can arise for studying the feasibility before constructing an UPSH plant: 1) the alteration of the natural conditions of surrounding aquifers, and (2) the efficiency of the plant depending on possible leakage in the cavities from the hydrogeological environment. A potential old slate mine was selected through a multi-criterion method and its geometrical and hydrogeological characteristics are used to build a simple but typical model. With the help of the HFEMC approach implemented in the code SUFT3D (HEG-ULg), the groundwater flows are modelled for a representative cavity. Simulations of groundwater flow induced by a UPSH system are performed and the main variables are identified. Piezometric heads around the reservoir oscillate, the magnitude of the oscillations and the time to achieve a pseudo-steady state (magnitude and head reached during oscillations not varying anymore with time) depend on the boundaries, the parameters of the aquifer and the characteristics of the underground reservoir. The required hydrogeological conditions are deduced and a screening methodology can be proposed to assess the main impacts caused in aquifers by UPSH plants. Their efficiency regarding the water level evolution inside the reservoir is also considered accommodating the cyclic pumped storage schemes. [less ▲]

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See detailTennis elbow - Actualités
Kaux, Jean-François ULg

in La Médecine et le Sport : mise au point (2016, January 23)

L’épicondylite latérale est plus communément appelée tennis elbow suite à sa fréquence élevée d’apparition chez les joueurs de tennis – lors du mouvement de revers, principalement. Cette pathologie du ... [more ▼]

L’épicondylite latérale est plus communément appelée tennis elbow suite à sa fréquence élevée d’apparition chez les joueurs de tennis – lors du mouvement de revers, principalement. Cette pathologie du membre supérieur, fréquente chez les sportifs, touche particulièrement la région épicondylienne radiale, zone d’insertion commune des muscles extenseurs. L’épicondylite latérale est 7 à 20 fois plus répandue que l’épicondylite médiale souvent nommée golfer’s elbow. L’âge est un facteur de risque important, la prévalence est la plus élevée chez les individus âgés entre 35 et 55 ans. Un autre élément prédisposant est la répétition d’un mouvement pendant plus de 2 à 4 heures par jour. Certains sports ont une plus grande incidence sur l’épicondylite que d’autres. Le tennis, le windsurf, l’escalade, le lancer du javelot ou les sports en chaises roulantes sont des activités à haut risque concernant les tendinopathies du coude. Le milieu professionnel joue aussi son rôle délétère envers les muscles épicondyliens. Le travail à la chaine sur des machines, obligeant des mouvements de flexion-extension répétés du coude, de la main et des doigts, peut rapidement être responsable d’épicondylites. De même, la position de travail, le matériel inadapté, le port d’outils trop lourds, le cumul de gestes à risque et, globalement, la mauvaise ergonomie du poste de travail constituent des facteurs déclenchant des tendinopathies du coude. Les épicondylites peuvent être aussi provoquées par des gestes quotidiens : le ménage, le bricolage, la traction de « caddy » au supermarché, l’excès d’activité sur ordinateur par exemple. Malgré une importante diversité des traitements conservateurs – repos, glace, orthèse, anti-inflammatoire non-stéroïdien en phase aigüe, ultrasons, stimulation électrique, massage transverse profond, étirement et onde de chocs –, les symptômes persistent ou des rechutes après un retour à l’activité incriminée sont souvent observées. De nouvelles thérapeutiques, par injection de plasma riche en plaquettes ou acide hyaluronique par exemple, sont également développées pour traiter les tendinopathies rebelles. Au final, si le traitement conservateur n’est plus efficace, la chirurgie sera envisagée. [less ▲]

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See detailDoes Fomalhaut A Have an Asteroid-belt Analog?
Su, Kate Y. L.; Rieke, George; Defrere, Denis ULg et al

in American Astronomical Society Meeting Abstracts (2016, January 01)

Fomalhaut plays an important role in the study of debris disks and small bodies in other planetary systems. The proximity and luminosity of the star make key features of its debris like the water ice-line ... [more ▼]

Fomalhaut plays an important role in the study of debris disks and small bodies in other planetary systems. The proximity and luminosity of the star make key features of its debris like the water ice-line easily accessible. Here we present ALMA cycle 1, 870 μm (345 GHz) observation targeted at the inner part of the Fomalhaut system with a synthesized beam of 0.45"x0.37" (~3 AU linear resolution at the distance of Fomalhaut) and a rms of 26 μJy per beam. The high angular resolution and sensitivity of the ALMA data enable us to place strong constraints on the nature of the warm excess revealed by Spitzer and Herschel observations. We detect a point source at the star position with a total flux consistent with thermal emission from the stellar photosphere. No structures that are brighter than 3 σ are detected in the central 15 AUx15 AU region. Modeling the spectral energy distribution using parameters expected for a dust-producing planetesimal belt indicates a radial location in the range ˜8-15 AU. This is consistent with the location where ice sublimates in Fomalhaut, i.e., an asteroid-belt analog. We also provide a new interpretation for the emission structure in the inner 10 AU region revealed by interferometric measurements at 2 and 8-13 μm as dust naturally connected to this proposed asteroid belt by Poynting-Robertson drag, dust sublimation, and magnetically trapped nano grains. [less ▲]

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See detailAn Accreting Protoplanet: Confirmation and Characterization of LkCa15b
Follette, Katherine B.; Miller Close, Laird; Males, Jared et al

in American Astronomical Society Meeting Abstracts (2016, January 01)

We present a visible light adaptive optics direct imaging detection of a faint point source separated by just 93 milliarcseconds (~15 AU) from the young star LkCa 15. Using Magellan AO's visible light ... [more ▼]

We present a visible light adaptive optics direct imaging detection of a faint point source separated by just 93 milliarcseconds (~15 AU) from the young star LkCa 15. Using Magellan AO's visible light camera in Simultaneous Differential Imaging (SDI) mode, we imaged the star at Hydrogen alpha and in the neighboring continuum as part of the Giant Accreting Protoplanet Survey (GAPplanetS) in November 2015. The continuum images provide a sensitive and simultaneous probe of PSF residuals and instrumental artifacts, allowing us to isolate H-alpha accretion luminosity from the LkCa 15b protoplanet, which lies well inside of the LkCa15 transition disk gap. This detection, combined with a nearly simultaneous near-infrared detection with the Large Binocular Telescope, provides an unprecedented glimpse at a planetary system during epoch of planet formation. [less ▲]

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See detailUne forme compliquée d'hypercalcémie hypocalciurique familiale
Potorac, Iulia ULg; BETEA, Daniela ULg; MALAISE, Olivier ULg et al

in Abstract book - Symposium "Perspectives in Endocrinology" (2016, January)

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See detailThe genetic causes of pituitary gigantism
Rostomyan, Liliya ULg; Lysy, P; Desfilles, C et al

in Abstract book - Symposium "Perspectives in Endocrinology" (2016, January)

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See detailHysteresis identification using nonlinear state-space models
Noël, Jean-Philippe ULg; Esfahani, Alireza; Kerschen, Gaëtan ULg et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIV (2016, January)

Most studies tackling hysteresis identification in the technical literature follow white-box approaches, i.e. they rely on the assumption that measured data obey a specific hysteretic model. Such an ... [more ▼]

Most studies tackling hysteresis identification in the technical literature follow white-box approaches, i.e. they rely on the assumption that measured data obey a specific hysteretic model. Such an assumption may be a hard requirement to handle in real applications, since hysteresis is a highly individualistic nonlinear behaviour. The present paper adopts a black-box approach based on nonlinear state-space models to identify hysteresis dynamics. This approach is shown to provide a general framework to hysteresis identification, featuring flexibility and parsimony of representation. Nonlinear model terms are constructed as a multivariate polynomial in the state variables, and parameter estimation is performed by minimising weighted least-squares cost functions. Technical issues, including the selection of the model order and the polynomial degree, are discussed, and model validation is achieved in both broadband and sine conditions. The study is carried out numerically by exploiting synthetic data generated via the Bouc-Wen equations. [less ▲]

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See detailReduced span spray: Part 3: Design of a narrow span nozzle
De Cock, Nicolas ULg; Massinon, Mathieu ULg; Ouled Taleb Salah, Sofiene ULg et al

in Aspect of Applied Biology (2016, January)

Optimisation of the droplet spectra of the agricultural spray may increase the spray application efficiency. The optimal spray would contain only the most efficient droplets in term of speed and size ... [more ▼]

Optimisation of the droplet spectra of the agricultural spray may increase the spray application efficiency. The optimal spray would contain only the most efficient droplets in term of speed and size. Therefore, this paper is presenting the first steps of the design of a narrow span nozzle in order to produce an optimised spray. The starting geometry is a splash plate nozzle with a disk ending with structures (i.e. tooth, grooves, and needles) that would separate the liquid sheet into jets. These jets would be in the Rayleigh regime which has the advantage of producing narrower droplet spectra than liquid sheet break-up. The present project aims to design a hydraulic nozzle producing a spray with a narrow drop size distribution in order to increase the agricultural spray application efficiency. In the present paper the first project steps are presented. [less ▲]

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See detailStudying the impact characteristics of spray droplets on plant surfaces using a multiphase CFD model
Delele, Mulugeta Admasu; Nuyttens, David; Ambaw, A et al

in Balsari, P; Cooper, S E; Glass, C R (Eds.) et al International Advances in Pesticide Application (2016, January)

The impact characteristics of spray droplets on plant surfaces was investigated based on a multiphase computational fluid dynamics (CFD) model using the Volume Of Fluid (VOF) approach. The contact angle ... [more ▼]

The impact characteristics of spray droplets on plant surfaces was investigated based on a multiphase computational fluid dynamics (CFD) model using the Volume Of Fluid (VOF) approach. The contact angle of the droplet on different surfaces was measured and included as a model parameter. The model was validated using experimental results that were conducted on different plant surfaces (apple, pear, cabbage and leek) and the model was applied to study the effect of droplet impact velocity, droplet diameter, formulation and surface topology on droplet impact characteristics. For each combination of model parameters, the model was capable of predicting the droplet impact outcome (adherence, rebound, splash and shattering). The results showed that multiphase CFD model has a capacity to predict the behavior of plant protection mixture droplets at impact on target surfaces. [less ▲]

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See detailExperimental nonlinear identification of an aircraft with bolted connections
De Filippis, Giovanni; Noël, Jean-Philippe ULg; Kerschen, Gaëtan ULg et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIII (2016, January)

Aircraft structures are known to be prone to nonlinear phenomena, especially as they constantly become lighter and hence more flexible. One specific challenge that is regularly encountered is the modeling ... [more ▼]

Aircraft structures are known to be prone to nonlinear phenomena, especially as they constantly become lighter and hence more flexible. One specific challenge that is regularly encountered is the modeling of the mounting interfaces between aircraft subcomponents. Indeed, for large amplitudes of vibration, such interfaces may loosen and, in turn, trigger complex mechanisms such as friction and clearances. In this context, the present work intends to investigate the nonlinear dynamics of the Morane–Saulnier Paris aircraft, accessible at ONERA. This aircraft possesses multiple bolted connections between two external fuel tanks and wing tips. The objective of the paper is specifically to carry out an adequate identification of the numerous nonlinearities affecting the dynamics of this full-scale structure. Nonlinearity detection and the subsequent subspace-based parameter estimation have been performed on experimental data, collected during an on-ground test campaign. Nonlinearity detection is first achieved by the comparison of frequency response functions estimated at low excitation level, with those obtained at high amplitude level, yielding insight towards accurately characterizing the behavior of the bolted connections. Then, a nonlinear subspace identification method is applied to measured data to estimate the linear and nonlinear parameters of the structure and novel strategies and tools that overcome specific arisen problems are developed. [less ▲]

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See detailLe cabinet de papier de Jean Jacques Boissard (1528-1602). Réception de l’Antiquité et collectionnisme
De Marco, Rosa ULg

in Bourdieu, Catherine (Ed.) Collections et collectionneurs dans les Trois-Évêchés (2016, January)

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See detailRobust Subspace Identification of a Nonlinear Satellite Using Model Reduction
Dossogne, Tilàn ULg; Noël, Jean-Philippe ULg; Kerschen, Gaëtan ULg

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIV (2016, January)

The frequency-domain nonlinear subspace identification (FNSI) method has recently been successfully applied to large-scale nonlinear structures. One of the key features of FNSI is the nonlinear ... [more ▼]

The frequency-domain nonlinear subspace identification (FNSI) method has recently been successfully applied to large-scale nonlinear structures. One of the key features of FNSI is the nonlinear generalisation of the stabilisation diagram. However, as in linear system identification, the selection of the model order in the diagram is complicated by the presence of spurious poles, resulting from noise and modelling errors. Spurious poles have been shown to strongly perturb the estimation of the nonlinear coefficients. The present paper establishes a constructive procedure to discriminate between spurious and genuine poles. This procedure is derived in modal space and is based on a dominancy index and on model reduction techniques. It is demonstrated on a complete satellite structure possessing nonsmooth nonlinearities and high modal density. Spurious frequency variations in the nonlinear coefficients are proved to be effectively removed, significantly improving the quality of the overall identified model. [less ▲]

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See detailObtaining nonlinear frequency responses from broadband testing
Gourc, Etienne ULg; Grappasonni, Chiara ULg; Noël, Jean-Philippe ULg et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIV (2016, January)

The objective of the paper is to obtain the frequency response curves of nonlinear mechanical systems from broadband testing. The proposed approach consists in coupling an identification method with a ... [more ▼]

The objective of the paper is to obtain the frequency response curves of nonlinear mechanical systems from broadband testing. The proposed approach consists in coupling an identification method with a continuation method. Specifically, the frequency-domain nonlinear subspace identification (FNSI) method is first used to derive an experimental model of the structure in state space from broadband measurements. The harmonic balance method coupled with arclength continuation then utilizes this experimental model to compute the frequency response curves of the system. The method is demonstrated using a numerical example. [less ▲]

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See detailExperimental study of isolated response curves in a two-degree-of-freedom nonlinear system
Detroux, Thibaut ULg; Noël, Jean-Philippe ULg; Kerschen, Gaëtan ULg et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIV (2016, January)

In the present paper, the observation and characterization of isolated response curves (IRCs) are experimentally reported in the case of a nonlinear system consisting of two masses sliding on an ... [more ▼]

In the present paper, the observation and characterization of isolated response curves (IRCs) are experimentally reported in the case of a nonlinear system consisting of two masses sliding on an horizontal guide. Transverse springs are attached to one mass to provide the nonlinear restoring force, and a harmonic motion of the complete system is imposed by prescribing the displacement of their supports. The existence of an IRC is related to a 3:1 internal resonance between the two modes of the system. The observed IRC is studied in detached and merged conditions using swept-sine excitations and system perturbations. [less ▲]

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See detailA Comparison of Reduced Order Modeling Techniques Used in Dynamic Substructuring
Roettgen, Daniel; Seeger, Benjamin; Tai, Wei Che et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIV (2016, January)

Experimental dynamic substructuring is a means whereby a mathematical model for a substructure can be obtained experimentally and then coupled to a model for the rest of the assembly to predict the ... [more ▼]

Experimental dynamic substructuring is a means whereby a mathematical model for a substructure can be obtained experimentally and then coupled to a model for the rest of the assembly to predict the response. Recently, various methods have been proposed that use a transmission simulator to overcome sensitivity to measurement errors and to exercise the interface between the substructures; including the Craig-Bampton, Dual Craig-Bampton, and Craig-Mayes methods. This work compares the advantages and disadvantages of these reduced order modeling strategies for two dynamic substructuring problems. The methods are first used on an analytical beam model to validate the methodologies. Then they are used to obtain an experimental model for structure consisting of a cylinder with several components inside connected to the outside case by foam with uncertain properties. This represents an exceedingly difficult structure to model and so experimental substructuring could be an attractive way to obtain a model of the system. [less ▲]

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See detailReduced span spray – Part 1: Retention
Massinon, Mathieu ULg; De Cock, Nicolas ULg; Ouled Taleb Salah, Sofiene ULg et al

in Aspect of Applied Biology, International Advances in Pesticide Application (2016, January)

Maximising treatment efficiency for a given target lies mainly on depositing a maximum part of the spray volume within an optimal droplet size range, which has to be as narrow as possible to reduce ... [more ▼]

Maximising treatment efficiency for a given target lies mainly on depositing a maximum part of the spray volume within an optimal droplet size range, which has to be as narrow as possible to reduce retention variability and drift issues. The present work focuses on exploring the effect of span factor of the droplet size distribution on the final retention by a 3D target plant using a modelling approach with the final aim of guiding the development of a reduced span nozzle (Reduced span spray – Part 3: Design of narrow span nozzle). Five droplet size spans have been tested for three VMD and three wetting scenarios on the same 3D plant architecture. Performing a screening of the different parameters involved in spray retention with a modelling approach based on a deeper understanding of leaf/droplet interactions is a valuable approach for highlighting the optimal droplet size distribution maximising droplet retention for a given target/formulation combination. [less ▲]

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See detailHabits des blogues, habits des blogueurs
Vintila, Elena-Georgiana ULg

in Parpală, Emilia (Ed.) Reprezentări ale identității în spațiul literar, lingvistic și cultural (2016)

More and more teachers of FLE choose to create a blog, to help their own students or by providing a database for other learners. The blog puts the teacher in a creative position - he must choose the ... [more ▼]

More and more teachers of FLE choose to create a blog, to help their own students or by providing a database for other learners. The blog puts the teacher in a creative position - he must choose the colors of each section, the size of the written form, the images that accompany the text, etc. Specific sections of the blog, - one usually titled Who am I? – leave to the professor / blogger the opportunity to present themselves and even to insert a picture of him. He becomes a graphic artist, a designer and organizer of the visual staging of the page. This grade is taken into account here - how teachers present themselves. They choose personal images or their preferences are moving towards the avatars? We chose 10 blogs of French teachers (5 men and 5 women) where bloggers use different forms of plural nature presentation to see how the clothes fit into the personal image of each one. [less ▲]

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See detailMéditerranée et conquêtes françaises : La place de la mer dans les campagnes d’Italie à l’époque du Grand Schisme d’Occident
Masson, Christophe ULg

in La maritimisation du monde : De la préhistoire à nos jours. Enjeux, objets et méthodes (2016)

Detailed reference viewed: 32 (6 ULg)
See detailGenetic pituitary tumors - clinical
Beckers, Albert ULg

in 15th International Workshop on Multiple Endocrine Neoplasia and other rare endocrine tumors - Abstract book (2016)

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See detailSolving the inverse dynamics of a flexible 3D robot for a trajectory tracking task
Lismonde, Arthur ULg; Sonneville, Valentin; Bruls, Olivier ULg

in Methods and Models in Automation and Robotics (MMAR), 2016 21th International Conference on (2016)

The end-effector trajectory tracking of robotic manipulators with flexible links requires advanced control concepts. In order to compute the feedforward component of the control scheme, the inverse ... [more ▼]

The end-effector trajectory tracking of robotic manipulators with flexible links requires advanced control concepts. In order to compute the feedforward component of the control scheme, the inverse dynamics of such flexible 3D multibody system is solved using an optimal control method. The robot is modeled using nonlinear finite elements formulated on the SE(3) group. Hence singularity and parameterization issues that can arise from 3D rotations are avoided. A numerical example of a 3D flexible arm is analyzed to demonstrate the capabilities of the method. [less ▲]

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See detailLes remèdes d'origine égyptienne utilisés dans la médecine vétérinaire antique
Marganne, Marie-Hélène ULg

in Gitton-Ripoll, Valérie (Ed.) La trousse du vétérinaire dans l'Antiquité et au Moyen Âge. Instruments et pratiques. Actes du IVe colloque international de médecine vétérinaire antique et médiévale (Lyon, 10-12 juin 2014) (2016)

Famous since the Odyssey (IV, 229-230) for its drugs, Egypt furnishes the Greek world with some medical substances already mentioned in the hippocratic treatises. Moreover, many Greek drug names have been ... [more ▼]

Famous since the Odyssey (IV, 229-230) for its drugs, Egypt furnishes the Greek world with some medical substances already mentioned in the hippocratic treatises. Moreover, many Greek drug names have been loaned from the Egyptian language, such as ἄμ(μ)ι for cumin, κίκι for castor-oil, κόμμι for gum, κῦφι for a complex preparation used for fumigation in cult practices, νίτρον for sodium carbonate, στίμμι for galena, σῶρυ for ferrous sulfate, and σάμψ(ο)υχον, for marjoram, whose name means “herb (sem) of Soukhos", another name for the crocodile god Sobek. The trade of drugs, spices and colourants, used in pharmacology, cosmetology, painting, cultual and magical practices, embalming rites and nutrition always flourished in Egypt and has intensified in Hellenistic and Roman times. As a continuation of the research on remedies of Egyptian origin in Greco-Roman pharmacopoeia, this article provides a list of Egyptian ingredients used in Greek and Latin veterinary prescriptions. The use of these substances is compared with recomandations from human medicine. Their availability and costs are also studied. [less ▲]

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See detailTowards a more sustainable development model in Belgium: the role of organic farming
Burny, Philippe ULg

in Petropoulos, D.; Kyriazopoulos, G. (Eds.) 2nd International Conference of Development and Economy (ICODECON) 9-12 June 2016 : book of abstracts (2016)

During the last years, organic farming considerably developed in Belgium. In 2014, it represented 5% of the total agricultural area and 4.5% of the number of farms [1]. Organic farming is mainly developed ... [more ▼]

During the last years, organic farming considerably developed in Belgium. In 2014, it represented 5% of the total agricultural area and 4.5% of the number of farms [1]. Organic farming is mainly developed in Wallonia where its share of the agricultural area exceeded 10% in 2014. Pastures for bovine production (meat and milk) and general crops (mainly cereals) are the most common cultivated areas. Poultry, eggs and vegetables recorded the highest increases. This success is partly the result of a strategic plan for the development of organic farming in Wallonia towards 2020 [2] and of remarkable financial support for the farmers [3]. More than 8,400 food and non-food organic products are available for the consumers. The number of prepared and processed food products is increasing. The market share of food organic products is still low, but continuously increasing: 1.3% in 2008, 2.3% in 2014. Remarkably, the expenses for organic food products still increased by 50% in 2014, while the total expenses for common food products declined for the first time since many years. The most important expenses per capita concern dairy products (5.40€), vegetables (4.74€), fruits (3.71€) and bovine and pork meat (2.84€). The main locations where food organic products are bought are supermarkets (45%) and specialized shops (31%). Families with children and high income and retired people with high income count for more than 5% of the expenses for organic food, while single persons aged over 40 are the category which spend the highest share of its income (4.1%) for organic food. In such conditions, organic farming is an important topic of the strategic plan for sustainable development presently proposed for discussion to the Walloon citizens. [less ▲]

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See detailAntiquité tardive et christianisme africains dans l'Africa romana : un bilan historiographique
Fialon, Sabine ULg

in Ruggeri, Paola (Ed.) L’Africa romana XX. Momenti di continuita e rottura : bilancio di 30 anni di convegni de l’Africa romana (2016)

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See detailViolence, obstruction augurale et crise de la République romaine
Berthelet, Yann ULg

in Gilhaus, Lennart; Kirsch, Stephanie; Mossong, Isabelle (Eds.) et al Elite und Krise in antiken Gesellschaften / Élites et crises dans les sociétés antiques (2016)

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See detailLe logement du cheval: implications en termes de bien-être et d’éthique
Mikaeloff, Camille ULg; Vandenheede, Marc ULg; Vandenput, Sandrina ULg

in 42ème Journée de la Recherche Équine "Bien-être des équidés" (2016)

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See detailImage and Ideology During the ED III and the Akkadian Periods: the Example of the Figurative Inlaid Panels of Mari
Couturaud, Barbara ULg

in Stucky, R. A.; Kaelin, O.; Mathys, H. P. (Eds.) Proceedings of the 9th International Congress on the Archaeology of the Ancient Near East (2016)

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See detailDes chevaliers irréfléchis ? Panique et témérité dans les traités d’art militaire (c. 1330-c. 1530)
Masson, Christophe ULg

in Trévisi, Marion; Vissière, Laurent (Eds.) Le feu et la folie. L’irrationnel et la guerre (fin du Moyen Âge-1920) (2016)

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See detailTracking a table tennis ball for umpiring purposes using a multi-agent system
Myint, Hnin; Wong, Patrick; Dooley, Laurence et al

in Proceedings of the 20th International Conference on Image Processing, Computer Vision, & Pattern Recognition (IPCV'16) (2016)

Tracking a table tennis ball for umpiring purposes is a challenging task as, in real-match scenarios, the ball travels fast and can become occluded or merged with other background objects. This paper ... [more ▼]

Tracking a table tennis ball for umpiring purposes is a challenging task as, in real-match scenarios, the ball travels fast and can become occluded or merged with other background objects. This paper presents the design of a multi-view based tracking system that can overcome the challenges of tracking a ball in real match sequences. The system has been tested on a complete table tennis rally and the results are very promising. The system is able to continuously track the ball with only marginal variations in detection. Furthermore, the initialization of the multi-camera system means it is both a portable and cost-effective solution for umpiring purposes. [less ▲]

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See detail"Les Mages hellénisés". Portrait illusoire d'une sagesse barbare.
Swennen, Philippe ULg

in Aufrère, Sydney (Ed.) Sagesses barbares: Echanges et réappropriation dans l'espace culturel gréco-romain (2016)

Dans "Les Mages hellénisés", Cumont et Bidez ont tenté un compromis entre l'état de l'art contemporain de la rédaction de leur ouvrage et le contenu des sources classiques qu'ils ont collectées. L'examen ... [more ▼]

Dans "Les Mages hellénisés", Cumont et Bidez ont tenté un compromis entre l'état de l'art contemporain de la rédaction de leur ouvrage et le contenu des sources classiques qu'ils ont collectées. L'examen de ces dernières permet pourtant de douter que les premiers témoins grecs du monde achéménide aient cru en l'historicité récente de Zoroastre. [less ▲]

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See detailDu texte littéraire au document : les connexions entre les papyrus littéraires et documentaires grecs et latins
Marganne, Marie-Hélène ULg

in Urbanik, Jakub; Derda, Tomasz; Lajtar, Adam (Eds.) Proceedings of the 27th International Congress of Papyrology (Warsaw, 29 July - 3 August 2013) (2016)

Si l'on distingue généralement les papyrus littéraires et les papyrus documentaires grecs et latins, ces deux catégories présentent cependant, à côté du support, de l'écriture et des scribes, d'autres ... [more ▼]

Si l'on distingue généralement les papyrus littéraires et les papyrus documentaires grecs et latins, ces deux catégories présentent cependant, à côté du support, de l'écriture et des scribes, d'autres caractéristiques communes : certains papyrus paralittéraires présentent des traits documentaires ; d'autres papyrus sont trop fragmentaires pour être sûrement identifiés, soit comme littéraires, soit comme documentaires ; certains écrits comme les lettres et les discours peuvent, soit être liés à une profession ou à une circonstance particulière (documents), soit être fictifs (littéraires) ; des papyrus documentaires contiennent des citations ou des réminiscences littéraires ; des papyrus littéraires présentent un document sur l'autre face ; des papyrus littéraires font partie d'archives documentaires . Appliquant aux textes documentaires ou indéterminés la même grille d'analyse qu'aux textes littéraires, la nouvelle base de données du CEDOPAL permet de rendre compte de ces connexions et de les exploiter en vue de mieux évaluer les écrits concernés, les méthodes scribales mises en œuvre, ainsi que leur contexte de production et d'utilisation. [less ▲]

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See detailImproving properties of recycled concrete aggregates by accelerated carbonation
Zhao, Zengfeng ULg; Remond, Sébastien; Damidot, Denis et al

in Proceedings of the 4th International Conference on Sustainability Construction Materials and Technologies (2016)

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See detailImaging protoplanets: observing transition disks with non-redundant masking
Sallum, S.; Eisner, J.; Close, L. M. et al

in Optical and Infrared Interferometry and Imaging V (2016)

Transition disks, protoplanetary disks with inner clearings, are promising objects in which to directly image forming planets. The high contrast imaging technique of non-redundant masking is well posed to ... [more ▼]

Transition disks, protoplanetary disks with inner clearings, are promising objects in which to directly image forming planets. The high contrast imaging technique of non-redundant masking is well posed to detect planetary mass companions at several to tens of AU in nearby transition disks. We present non-redundant masking observations of the T Cha and LkCa 15 transition disks, both of which host posited sub-stellar mass companions. However, due to a loss of information intrinsic to the technique, observations of extended sources (e.g. scattered light from disks) can be misinterpreted as moving companions. We discuss tests to distinguish between these two scenarios, with applications to the T Cha and LkCa 15 observations. We argue that a static, forward-scattering disk can explain the T Cha data, while LkCa 15 is best explained by multiple orbiting companions. [less ▲]

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See detailPhysical modeling of an aerating stepped spillway
Erpicum, Sébastien ULg; Lodomez, Maurine ULg; Savatier, Jérémy et al

in Crookston, Brian; Tullis, Blake (Eds.) Hydraulic Structures and Water System Management (2016)

To mitigate the negative effects on the water quality in the downstream river of a projected large dam, and in particular to increase the dissolved oxygen concentration during low flow periods within the ... [more ▼]

To mitigate the negative effects on the water quality in the downstream river of a projected large dam, and in particular to increase the dissolved oxygen concentration during low flow periods within the first 10 years of dam operation, an aerating weir has been designed and tested on a physical model at the Laboratory of Engineering Hydraulics (HECE) of the Liege University. The design of the structure has been done considering data from the literature. The selected solution is a 3 m high stepped spillway designed to operate in nappe flow conditions within the range of design discharges (25 – 100 m³/s). To validate the design, a physical model representing a section of the weir at a 1:1 scale has been built and operated in the laboratory. Chemical dissolved oxygen removal technique has been applied upstream of the model to be able to measure the weir aerating efficiency. The physical model results show that the proposed structure is able to maintain, in the range of discharge in the river from 25 to 100 m³/s, a minimum 5 mg/l oxygen concentration downstream, whatever the upstream oxygen concentration. The paper presents the design process of the weir, the scale model features and the results of the validation tests on the physical model. The prototype construction will take place in 2017 and the water quality will be monitored. [less ▲]

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See detailAgriculture towards a more sustainable development: the case of Wallonia (South of Belgium)
Burny, Philippe ULg

in Svatos, Miroslav et al. (Ed.) International Scientific Conference Agrarian Perspectives XXV "Global and European Challenges for Production, Agribusiness and the Rural Economy", Prague, Czech Republic, September 14-16, 2016: book of abstracts (2016)

The new Common Agricultural Policy defined in 2013 and implemented since 2015 created the so-called "green payment" and also supports organic farming and origin-labelled products in order to produce more ... [more ▼]

The new Common Agricultural Policy defined in 2013 and implemented since 2015 created the so-called "green payment" and also supports organic farming and origin-labelled products in order to produce more sustainable agricultural activities. This paper analyses the impact of the green payment on Walloon agriculture in 2015 and the evolution of organic farming and origin-labelled products in the South of Belgium. [less ▲]

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See detailFaire de la musique : rythmes et rapports chez Mallarmé
Durand, Pascal ULg

in Bonnet, Antoine; Frangne, Pierre-Henry (Eds.) Mallarmé et la Musique, la Musique et Mallarmé (2016)

Inséparable du processus d'autonomisation du discours poétique et de la radicalisation que ce processus connaît chez lui, sur fond de propagande wagnérienne et de propagation du vers libre, le modèle ... [more ▼]

Inséparable du processus d'autonomisation du discours poétique et de la radicalisation que ce processus connaît chez lui, sur fond de propagande wagnérienne et de propagation du vers libre, le modèle musical prend, dans l'esthétique de Mallarmé, l'aspect d'un système de rapports généralisés à tous les paramètres de l'écrit. L'inhérence réciproque que le poète établit entre la "Musique" et les "Lettres", représentation imaginaire dont Un Coup de dés constitue la contrepartie réalisée, répond d'un côté à un matérialisme de la forme et de l'autre à un idéalisme fictif, voulant que les structures verbales et prosodiques s'offrent en miroir du système de rapports avec quoi se confond, en sa finitude sans extériorité, l’univers même. [less ▲]

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See detailSparse plus low-rank autoregressive identification in neuroimaging time series
Liegeois, Raphaël ULg; Mishra, Bamdev ULg; Zorzi, Mattia et al

in Proceedings of CDC 2015 (2016)

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See detailErosion and sedimentation in a hydropower project: assessing impacts and opportunities
Dewals, Benjamin ULg; Erpicum, Sébastien ULg; Archambeau, Pierre ULg et al

in Schüttrumpf, Holger (Ed.) Offene Gewässer: Strahlwirkung, Fischaufstieg, Fischabstieg, Sedimente, Schadstoffe (2016)

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See detailDe l’Aurignacien au Gravettien dans le Nord-Ouest européen
Touzé, Olivier ULg

in Chirica, Vasile; Ichim, Cristian (Eds.) Les Aurignaciens. Leur création matérielle et spirituelle (2016)

The study of the Early Upper Palaeolithic in Northwestern Europe faces several difficulties associated with the qualitative and quantitative state of the documentation. These limits constrain the ... [more ▼]

The study of the Early Upper Palaeolithic in Northwestern Europe faces several difficulties associated with the qualitative and quantitative state of the documentation. These limits constrain the precision of the analyses, though the study of this period benefits from a dynamic of research based on the preventive and programmed archaeologies, and the reappraisal of old collections. Recent data and current work on several sites demonstrate that Northwestern Europe can fully contribute to the discussions on this period, and in particular to the question of the transition between the Aurignacian and the Gravettian. Thus, we propose here an overview of the period extending from the Recent Aurignacian to the Early Gravettian, in order to propose some thoughts on this pivotal phase of the Upper Palaeolithic. During this particular period, the European Northwest indeed distinguishes itself by the appearance of the Maisierian, an original lithic tradition whose technical system, devoid of elements peculiar to the Aurignacian traditions, announces the development of Gravettian norms. [less ▲]

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See detailFrequencies of Nappe Vibration for Free-overfall Structures
Lodomez, Maurine ULg; Pirotton, Michel ULg; Dewals, Benjamin ULg et al

in 6th IAHR IJREWHS (2016)

Under relatively low-head discharges, the occurrence of nappe oscillation, otherwise known as nappe vibration, may be observed on hydraulic structures with a free overfall, such as weirs, crest gates and ... [more ▼]

Under relatively low-head discharges, the occurrence of nappe oscillation, otherwise known as nappe vibration, may be observed on hydraulic structures with a free overfall, such as weirs, crest gates and fountains. This phenomenon, which has been early identified as undesirable and potentially dangerous on gates, is characterized by oscillations in the thin flow nappe cascading downstream of the crest. In addition, these oscillations produce a significant level of noise and acoustic pressure waves that increase the environmental and societal impacts of the structure. A review of the scientific literature shows a lack of consensus regarding the causes and source of the oscillations development. In this context of relatively poor understanding of the dominant processes, a detailed investigation has been undertaken to identify and quantify the nappe vibration mechanism. The research is being performed with a prototype-scale linear weir located at the Engineering Hydraulics laboratory of the University of Liège. The study employs high-speed cameras and audio equipment to characterize the nappe vibration. This paper presents first characteristics of the nappe vibrations gained from images and sound analysis, especially in terms of vibration frequency, for a quarter round and a half round weir crest. This study shows that frequencies measured by sound and image analyses are identical and depend on the crest shape, the fall height and the unit discharge. [less ▲]

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See detailBiomass production and use of silvopastoral areas in northern Morocco
Chebli, Youssef ULg; Chentouf, M.; Hornick, Jean-Luc ULg et al

in Proceedings of the 12th International Conference on Goats (2016) (2016)

In Rif Mountain of Morocco, sylvopastoral systems satisfy the diverse needs of local population and represent the most important feed sources for goats. This system is under pressure due to climate change ... [more ▼]

In Rif Mountain of Morocco, sylvopastoral systems satisfy the diverse needs of local population and represent the most important feed sources for goats. This system is under pressure due to climate change and overgrazing. For a sustainable and integrated development of this area, it is essential to establish a resource assessment. This study aims to evaluate the pastoral production (biomass) and investigate the use of pasture in Rif Mountain (Loubar) exclusively used by goat herds. For biomass production, we used the method of the reference module. The surveys, on using pasture by breeders, were realized during the biomass evaluation period. The pastoral shrubs, mainly Cistus crispus, Cistus monspeliensis, Lavendula stoeches and Pistacia lentiscus, represent the most palatable species selected by goats. Breeders use pasture throughout the year, except on rainy days where they resort to limbing. The pasture was characterized by a poor floristic diversity (65 species) dominated by shrubs. The biomass produced was estimated at 373 kg dry matter per hectare composed for 63% by shrubs. For biomass production, significant differences were observed depending on the season and according to sampling sites. The continuous use of the same pasture for a long time can explain the low production estimated and appearance of unpalatable species, such as Arisarum vulgare, Daphne gnidium and Ranunculus sardous. In fact, due to the bad operating practices of pastoral resources, sylvopastoral areas will be less available and of lower quality. The reasonable use of these resources, including a reduction in grazing pressure, should be developed to ensure a better productivity and sustainability. [less ▲]

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See detailOrganic farming and the greening of the common Agricultural Policy made Walloon agriculture become more environment friendly in 2015
Burny, Philippe ULg; Petrescu, Dacinia Crina; Petrescu-Mag, Ruxandra Malina

in Babes-Bolyai University (Ed.) 11th International Conference on "Environmental Legislation, Safety Engineering and Disaster Management": book of abstracts (2016)

In Wallonia, organic farming continues to increase its share of agricultural activities, the number of organic farmers exceeding for the first time 10% of the total number of farmers in 2014, with 8.6% of ... [more ▼]

In Wallonia, organic farming continues to increase its share of agricultural activities, the number of organic farmers exceeding for the first time 10% of the total number of farmers in 2014, with 8.6% of the total agricultural area. Meadows represent 83% of the organic areas, general crops 15% and vegetables 1%. The number of cattle heads is still increasing, while poultry and laying hen recorded a significant progress during the last years. Organic products consumption is also increasing and the market share of organic products in food products reached 2.3% in 2014. On the other hand, the implementation of the new Common Agricultural Policy, and particularly its green payment, obliges 50% of Walloon farmers to practice crop diversification and 46% to have at least 5% of ecological focus area within their arable land in 2015, which represents more than 24,000 ha. So, organic farming and ecological focus areas do have today a significant share of the Walloon agricultural area, leading to a more sustainable agriculture. [less ▲]

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See detailLes formations à silex dans le sud de la France : élaboration en multipartenariat d’une base de données géoréférencées, premiers résultats
Fernandes, Paul; Tuffery, Christophe; Raynal, Jean-Paul et al

in Tomasso, Antonin; Binder, Didier; Martino, Gabriele (Eds.) et al Ressources lithiques, productions et transferts entre Alpes et Méditerranée (2016)

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See detailPenes uos auspicia esse, uos solos gentem habere. Le prestige auspicial du patriciat, noblesse gentilice par excellence
Berthelet, Yann ULg

in Hurlet, Frédéric; Baudry, Robinson (Eds.) Le Prestige à Rome à la fin de la République et au début du Principat (2016)

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See detailstochastic stability of a rotational oscillator under gusty winds
Vanvinckenroye, Hélène ULg; Denoël, Vincent ULg

in Proceedings of the XIV Conference of the Italian Association for Wind Engineering (2016)

This work studies the rotational stability of an oscillator in a random wind velocity field. Its susceptibility to autorotation is assessed by the time necessary to reach a given energy barrier departing ... [more ▼]

This work studies the rotational stability of an oscillator in a random wind velocity field. Its susceptibility to autorotation is assessed by the time necessary to reach a given energy barrier departing from an initial energy level. This first passage time problem is solved by replacing the actual power spectral density of the loading by an equivalent δ-correlated noise. [less ▲]

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See detailConservation of contemporary art: from concepts to practice, Cloaca by Wim Delvoye
Verbeeck, Muriel ULg; Broers, Nico

in Hermens, Erma; Robertson, Frances (Eds.) Authenticity in transition (2016)

This paper looks at the ambiguities of language and concepts when considering the restoration of contemporary art.

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See detailStochastic rotational stability of tower cranes under gusty winds
Vanvinckenroye, Hélène ULg; Denoël, Vincent ULg

in Proceedings of the Sixth International Conference on Structural Engineering, Mechanics and Computation (2016)

This work aims to study the rotational stability of a tower crane left free to rotate. Indeed, in case of important wind velocities, small oscillations can increase and build up into autorotations due to ... [more ▼]

This work aims to study the rotational stability of a tower crane left free to rotate. Indeed, in case of important wind velocities, small oscillations can increase and build up into autorotations due to autoparametric excitation of the structure. Many references in the literature describe the limit between oscillation and autorotation for simple cases like the deterministic pendulum and evidence the importance of the Hamiltonian of a system on its stability. In this context the susceptibility of the structure to this dynamical instability is characterized by the average time necessary to reach a given energy barrier departing from an initial energy level. This first passage time is the solution of the Pontryagin equation and is approached by an asymptotic expansion. First- and second-order terms are calculated as well as the boundary layer solution providing a correction when the initial energy is close to the barrier level. [less ▲]

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See detailThermal maturity of carbonaceous material from Mbuji-Mayi Supergroup (Kasai, Democratic Republic of Congo)
Kabamba Baludikay, Blaise ULg; Storme, Jean-Yves; Baudet, Daniel et al

in European Geosciences Union General Assembly 2016 Vienna, Austria, 2016 (2016)

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See detailContract Farming as a Determinant of Promoting Tea Marketing Channel for Small Producers in Phu Tho Province
Le Thi Kim, Oanh ULg; Vu Dinh, Ton; Tran Huu, Cuong et al

in Global Business Research Journals (GBRJ) (Ed.) Proceedings of the Doctoral Research Conference in Business Studies & Management Sciences (2016)

Making contracts between farmers and firms (contract farming, for short) plays an important role in establishing access to the agricultural markets for the small producers, especially in the developing ... [more ▼]

Making contracts between farmers and firms (contract farming, for short) plays an important role in establishing access to the agricultural markets for the small producers, especially in the developing and less developed countries. It is argued that contract farming provides farmers with the assured sale of their crops and agro-business firms with a steady supply of agricultural products required by the market. This paper focuses on analyzing benefits of tea producers through signing contract with firms. By using relevant research methods of verifying studying areas, making Participatory Rural Appraisal (PRA), and surveying farmers, the paper finds that although contract farmers receive lower fresh tea price in compared with the price received by non-contract farmers, they would have higher price stability and are provided with market guarantee mechanism. These benefits are really important in context of globalization and market liberalization with the demand for high quality and high value products. It is highly recommended that small farmers therefore should participate in the coordination model between farmers and firms in the process of tea production and marketing in Phu Tho Province, Vietnam. [less ▲]

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See detailStudies of WR+O colliding-wind binaries
Gosset, Eric ULg

in Hamann, Wolf-Rainer; Sander, Andreas; Todt, Helge (Eds.) Wolf-Rayet Stars: Proceedings of an International Workshop held in Potsdam, Germany, 1-5 June 2015. Edited by Wolf-Rainer Hamann, Andreas Sander, Helge Todt. Universitätsverlag Potsdam, 2015., p.305-308 (2016)

Two of the main physical parameters that govern the massive star evolution, the mass and the mass-loss rate, are still poorly determined from the observational point of view. Only binary systems could ... [more ▼]

Two of the main physical parameters that govern the massive star evolution, the mass and the mass-loss rate, are still poorly determined from the observational point of view. Only binary systems could provide well constrained masses and colliding-wind binaries could bring some constraints on the mass-loss rate. Therefore, colliding-wind binaries turn out to be very promising objects. In this framework, we present detailed studies of basic observational data obtained with the XMM-Newton facility and combined with ground-based observations and other data. We expose the results for two particularly interesting WR+O colliding-wind binaries: WR22 and WR21a. [less ▲]

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See detail« “Semen est sanguis christianorum” (Apol. 50, 13). Tertullien et l'hagiographie africaine »
Fialon, Sabine ULg

in Lagouanère, Jérôme; Fialon, Sabine (Eds.) Tertullianus Afer. Tertullien et la littérature chrétienne d'Afrique, IIe-VIe siècle (2016)

Despite his long expositions and treatises dealing with martyrial heroism, Tertullian does not seem to have influenced the North African hagiographical production (iind-vith centuries), while Cyprian did ... [more ▼]

Despite his long expositions and treatises dealing with martyrial heroism, Tertullian does not seem to have influenced the North African hagiographical production (iind-vith centuries), while Cyprian did it deeply. This article aims to show that the influence of the african rhetor was yet genuine. If it is difficult to detect in the Passio sanctarum Perpetuae et Felicitatis, we can find it in donatist hagiography and above all in hagiographic texts from Mauretania Caesariensis. By studying themes and literary echoes coming from Tertullian’s work, this contribution wants to help with a better comprehension of the legacy left by the rhetor in a literary genre which is not much examine from this point of view. It also wants to highlight the cultural vitality of Mauretania Caesariensis during late Antiquity. [less ▲]

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See detailEddies in the Western Mediterranean seen by spaceborne radar
Karimova, Svetlana ULg; Gade, Martin

in IGARSS 2016 (2016)

In the present study we analyze manifestations of submesoand mesoscale eddies in the Western Mediterranean Sea found in Envisat Advanced Synthetic Aperture Radar (ASAR) imagery of 2010-2011. Location of ... [more ▼]

In the present study we analyze manifestations of submesoand mesoscale eddies in the Western Mediterranean Sea found in Envisat Advanced Synthetic Aperture Radar (ASAR) imagery of 2010-2011. Location of mesoscale eddies found in the imagery outlined the main stream of the basin. Special attention is being paid to the relation between the numbers of cyclonic and anticyclonic eddies at different spatial scales. It is shown that eddies less than 60 km in diameter are dominantly cyclonic; at some intermediate scales (about 70 km) there is a balance between the numbers of cyclonic and anticyclonic eddies and at largest scales (>100 km) eddies are predominantly anticyclonic. [less ▲]

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See detailAssessing the effect of traveler's nationality on daily travel time expenditure using Zero-Inflated Negative Binomial Regression models: results from the Belgian national household travel survey.
Eftekhar, Hamed ULg; Creemers, Lieve; Cools, Mario ULg

in Proceedings of the 95th Annual Meeting of the Transportation Research Board (2016)

In this paper, the effect of traveler's nationality on daily travel time expenditure is assessed using data stemming from the 2010 Belgian national household travel survey. In particular, different (zero ... [more ▼]

In this paper, the effect of traveler's nationality on daily travel time expenditure is assessed using data stemming from the 2010 Belgian national household travel survey. In particular, different (zero-inflated) negative binomial models were estimated to isolate the effect of nationality, after controlling for other contributing factors such as socio-demographics, residential characteristics, transport options and temporal characteristics. The results indicate that, even if one controls for a series of other influencing factors, nationality plays a significant role in differences in travel time expenditure. This finding is especially relevant in the development of policy packages that are targeted to tackle social inequalities. From a methodological perspective, different methodological options, i.e. two weighting schemes and two bootstrap solutions, were presented to provide sufficient support for the conclusions. In order to generalize the results in further studies, an oversampling of travelers with a different nationality is strongly recommended. Future research should focus more on the underlying psychological constructs of why ethnic and cultural differences persist, even if one accounts for other determinants. [less ▲]

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See detailImpacts of urban expansion on future flood damage: A case study in the River Meuse basin, Belgium
Mustafa, Ahmed; Bruwier, Martin ULg; Teller, Jacques ULg et al

in Erpicum, Sébastien; Dewals, Benjamin; Archambeau, Pierre (Eds.) et al Sustainable Hydraulics in the Era of Global Change: Advances in Water Engineering and Research (2016)

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See detailLe Groupe de Liège autour de Jacques Izoard
Purnelle, Gérald ULg

in Saint-Amand, Denis (Ed.) La Dynamique des groupes littéraires (2016)

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See detailResilience to environmental pressure through quality food demand. The case of Romania
Petrescu, Dacinia Crina; Petrescu-Mag, Ruxandra Malina; Burny, Philippe ULg

in Babes-Bolyai University (Ed.) 11th International Conference on "Environmental Legislation, Safety Engineering and Disaster Management": book of abstracts (2016)

The paper focuses on the Romanian consumer behavior and perceptions related to meat consumption, following that it is deeply embedded in the Romanian dietary food culture. The meat consumption is an ... [more ▼]

The paper focuses on the Romanian consumer behavior and perceptions related to meat consumption, following that it is deeply embedded in the Romanian dietary food culture. The meat consumption is an indicator of the population welfare degree and it is often used in assessing the food safety. The novelty lies in the investigation of meat consumption hindering factors, with a special emphasis on those related to the environmental protection. The main research objective was to evaluate the importance attached by consumers to meat products safety in order to develop resilience to environmental pressure through quality food production and consumption. Statistical analysis revealed the interest in meat free-off antibiotics, hormones and no genetically modified. From a pratical perspective, the results indicate directions that policy-making should follow to adapt the production sector to the market demands, along with promoting a more sustainable consumption pattern. [less ▲]

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See detailHandling Intra-Household Correlations in Modeling Travel: A Comparison of Hierarchical (Random Effect) Models and Marginal (GEE) Models
Cools, Mario ULg; Moons, Elke

in Proceedings of the 95th Annual Meeting of the Transportation Research Board (2016)

In this paper, the necessity for treating intra-household correlation is investigated by analyzing two travel behavior indices, i.e. travel time and travel distance, for three important travel motives ... [more ▼]

In this paper, the necessity for treating intra-household correlation is investigated by analyzing two travel behavior indices, i.e. travel time and travel distance, for three important travel motives (commuting, shopping, and leisure). Data stemming from the 2010 Belgian National Household Travel Survey are used in the analysis. Two model approaches that accommodate for intra-household correlation are compared, namely the generalized linear mixed model (GLMM) and GEE model approach. Both model approaches show that high levels of intra-household correlation are present, and therefore the use of models that take into account intra-household correlation, is strongly recommend. Results indicate that this requirement is the most urgent for non-commuting trips. Moreover, the results show that GLMM and GEE yield comparable estimates in the case of normally distributed data. Furthermore, evidence was provided that the more the estimates of the intra-household correlation provided by the two approaches differ, the less the homogeneity of the parameters is assured. In this regard, if one has to choose between the GLMM and GEE methodology, especially the negative consequences of choosing an inappropriate covariance model in the case of a GLMM model favor the selection of the GEE methodology. Further research is needed to compare the two approaches in the context of non-normally distributed travel behavior data. [less ▲]

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See detailLinkages in the chicken chain of Vietnam: A case study in Kim Dong district, Hung Yen province
Bui Thi, Nga; Lebailly, Philippe ULg

in Global Business Research Journals (Ed.) Proceedings of the Fourth European Academic Research Conference on Global Business, Economics, Finance and Banking (EAR16Swiss Conference) (2016)

Chicken raising in Kim Dong district, Hung Yen province of Vietnam is currently still in the first stage of development with spontaneous, small-scale, and easily vulnerable. These things lead to the ... [more ▼]

Chicken raising in Kim Dong district, Hung Yen province of Vietnam is currently still in the first stage of development with spontaneous, small-scale, and easily vulnerable. These things lead to the inefficiency in the chain activities, and in the long run, all the chain actors will have less benefit. This study aims to analyze and assess the real situation of linkages in the chicken chain and proposed some recommendations to strengthen the linkages and improve the chicken chain in the Kim Dong district based on the questionaire survey data of chicken chain actors. The findings showed that the chicken chain in the study site was undeveloped. The chain actors included input suppliers, chicken raising farmers, traders, retailers and some restaurants and supermarkets. Farmers accounted for the most important role. The other actors in the chain play a role of a bridge between producers and consumers. Processing agent did not appear in the chain. The linkages in the chain were simple, informal and loose. The actors were discrete and lack of cooperation. To promote the linkage of the chicken chain, farmers should improve their linkages to improve their strength, their voice and their power. Farmers could establish cooperation groups or cooperatives to support each other. Cooperative among chain actors should be enhance to form a tight and official chain. Local authorities should support in finding markets, creating a bridge and an environment for chain actors. Extension and educational institutions should support farmers and other actors and stakeholders to improve knowledge of the chain, so they could understand the benefit and form effective chain. [less ▲]

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See detailBode, Nicolai und Elisa von der Recke: Korrespondenzen und Netzwerke
Leyh, Valérie ULg

in Kinzel, Till; Berghahn, Cord-Friedrich (Eds.) Johann Joachim Christoph Bode (1731-1793) - ein Aufklärer aus Braunschweig in den kulturellen Netzwerken seiner Zeit (2016)

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See detailFrom the spirit to the letter of the charters : mind the gap for the future
Houbart, Claudine ULg; Dawans, Stéphane ULg

in Szmygin, Bogusław (Ed.) Heritage in Transformation. Cultural heritage Protection in XXI century. Problems, Challenges, Predictions (2016)

Since the 1960’s and the foundation of ICOMOS, charters have been considered as a sort of conservation gospel. In this presentation, we would like to question this fact, in the light of the very ... [more ▼]

Since the 1960’s and the foundation of ICOMOS, charters have been considered as a sort of conservation gospel. In this presentation, we would like to question this fact, in the light of the very particular production and reception conditions of the documents. What may be perceived as a mostly provocative approach seems to us a constructive basis for future reflections. When we read and use charters – in this presentation, we will mainly focus on the Venice Charter, the Nara document and the Riga Charter – , we forget too often that they have been written by human beings, sometimes very tired, in a hurry, and even arguing with each other. The study of the archival material related to the writing of the Venice Charter and the Nara document very clearly illustrates that these documents are rather a conceptual “bricolage” than indisputable normative texts as if they had been written by lawyers. In the case of the Venice Charter, the archive as well as the records of Raymond M. Lemaire, Paul Philippot or Gertrud Tripp make clear that the document has been written at the last moment and adopted too rapidly by an assembly too glad to finally have a updated version of the Athens charter. As a consequence, only a few years later, Raymond Lemaire and Piero Gazzola already questioned the validity of the new text in the light of the extension of heritage debates to the city centers. On the other hand, the fact that a French and an English version of the Nara document were written in parallel by Raymond M. Lemaire and Herb Stovel in 1994 has had immediate consequences on the content and the formulation of the text, which logically left both of them unsatisfied with the result. Even so, the Venice charter and the Nara document still have force of law today. Yet, besides the particular circumstances of their writing, we must keep in mind that these texts answered specific questions, closely linked to the context: a critical answer to postwar reconstruction for the first, and apparently opposed visions of authenticity between East and West for the second. As far as the Riga charter is concerned, the influence of the delicate context of the Eastern bloc collapse is evident. For this reason, using such documents today requires at least a critical reading, going back to the spirit beyond the text. Our presentation will illustrate ad absurdum, through recent case studies, how a cynical reading of such documents can lead to interventions dangerously in conflict with this spirit and the fundamental ideals of conservation philosophy. In the era of late capitalism and heritage globalization, are we allowed to forget the conditions and the context in which our doctrinal documents have been written to justify anything and everything and to meet, for example, the “tourist gaze”, the “nouveaux riches” taste or the architect’s egomania? Do architects really want to know what the writers of the Venice charter’s article 9 meant by the “contemporary stamp”? What are the limits of the tolerance towards reconstruction first expressed by the Nara document, and a few years later, the charter of Riga? So many questions that ICOMOS must face if it wants to pursue its guiding mission in a mostly financial world. [less ▲]

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See detailAn approach for detection of glomeruli in multisite digital pathology
Marée, Raphaël ULg; Olivo-Marin, Jean-Christophe; Meas-Yedid, Vannary

in Proceedings International Symposium on Biomedical Imaging (2016)

We present a novel bioimage informatics workflow that combines Icy and Cytomine software and their algorithms to enable large-scale analysis of digital slides from multiple sites. In particular, we apply ... [more ▼]

We present a novel bioimage informatics workflow that combines Icy and Cytomine software and their algorithms to enable large-scale analysis of digital slides from multiple sites. In particular, we apply this workflow on renal biopsies and evaluate empirically our approach for the automatic detection of glomeruli in hundreds of tissue sections. [less ▲]

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See detailNew geochronological history of the Mbuji-Mayi Supergroup (Proterozoic, DRC) through U-Pb and Sm-Nd dating
François, Camille ULg; Kabamba Baludikay, Blaise ULg; Storme, Jean-Yves et al

in European Geosciences Union General Assembly 2016 Vienna, Austria, 2016 (2016)

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See detailThe impact of preexisting semantic integration on associative memory in normal aging
Bastin, Christine ULg

in Proceedings of the 6th International Conference on Memory (2016)

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See detailLe théâtre en vers d'Apollinaire
Purnelle, Gérald ULg

in Purnelle, Gérald; Delbreil, Daniel (Eds.) Apollinaire et le théâtre. Actes du XXIIIe colloque international de Stavelot (2016)

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See detailExperimental Passive Flutter Mitigation Using a Linear Tuned Vibrations Absorber
Verstraelen, Edouard ULg; Habib, Giuseppe ULg; Kerschen, Gaëtan ULg et al

in Proceedings of the IMAC XXXIV Conference (2016)

The current drive for increased efficiency in aeronautic structures such as aircraft, wind turbine blades and helicopter blades often leads to weight reduction. A consequence of this tendency can be ... [more ▼]

The current drive for increased efficiency in aeronautic structures such as aircraft, wind turbine blades and helicopter blades often leads to weight reduction. A consequence of this tendency can be increased flexibility, which in turn can lead to unfavourable aeroelastic phenomena involving large amplitude oscillations and nonlinear effects such as geometric hardening and stall flutter. Vibration mitigation is one of the approaches currently under study for avoiding these phenomena. In the present work, passive vibration mitigation is applied to an experimental aeroelastic system by means of a linear tuned vibration absorber. The aeroelastic apparatus is a pitch and flap wing that features a continuously hardening restoring torque in pitch and a linear one in flap. Extensive analysis of the system with and without absorber at subcritical and supercritical airspeeds showed an improvement in flutter speed around 34%, a suppression of a jump due to stall flutter, and a reduction in LCO amplitude. Mathematical modelling of the experimental system showed that optimal flutter delay can be obtained when two of the system modes flutter simultaneously. However, the absorber quickly loses effectiveness as it is detuned. The wind tunnel measurements showed that the tested absorbers were much slower to lose effectiveness than those of the mathematical predictions. [less ▲]

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See detail"Nos coeurs pendent aux citronniers". Fruits et fleurs de la Méditerranée dans la poésie d'Apollinaire
Purnelle, Gérald ULg

in Debon, Claude (Ed.) Apollinaire méditerranéen. Actes du XXIIe colloque international. Aix-en-Provence, 11, 12 et 13 avril 2013 (2016)

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See detailGain Adaptation for Continuous Sliding Mode Control
Cho, Hancheol ULg

in 2016 2nd International Conference on Control Science and Systems Engineering (ICCSSE), Singapore 27-29 July 2016 (2016)

In this paper a novel adaptive sliding mode controller design is presented for robust control of nonlinear uncertain systems. A continuous control law to compensate for the uncertainties is first ... [more ▼]

In this paper a novel adaptive sliding mode controller design is presented for robust control of nonlinear uncertain systems. A continuous control law to compensate for the uncertainties is first developed that is completely free from chattering. Focusing on the relation between the tried gain value and the resultant sliding variable, a new method for estimating the uncertainty bounds is then derived, leading to an adaptive law for gain-tuning by which the error eventually lies within a user-specified region in a finite time. Unlike other existing approaches, the new adaptive rule only requires the magnitude of the control input in the previous time step, which greatly eases the application of the proposed algorithm to real-world systems. An inverted pendulum system is simulated to demonstrate the accuracy and effectiveness of the proposed control strategy. [less ▲]

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See detailProduction pastorale et laitière au niveau d’un élevage extensif au nord du Maroc
Chebli, Youssef ULg; El Otmani, Samira ULg; Hilal, Btissam et al

in Napoléone, M.; Ben Salem, H.; Boutonnet, J. P. (Eds.) et al The value chains of Mediterranean sheep and goat products. Organisation of the industry, marketing strategies, feeding and production systems (2016)

In Northern Morocco, silvopastoral area was a free fodder resource that contributes to regular feeding of goat. The study was conducted in extensive farming of dairy goat (Bouzahri pasture). The objective ... [more ▼]

In Northern Morocco, silvopastoral area was a free fodder resource that contributes to regular feeding of goat. The study was conducted in extensive farming of dairy goat (Bouzahri pasture). The objective is to estimate a pastoral contribution of pasture and its effect on production and milk quality. Biomass, floristic diversity and nutritional value were determined. A total of seventy pastoral species were recorded. The biomass production is estimated to 4963 kg DM/ha, composed of 89% by Calicotome villosa, Cistus crispus, Erica arborea, Inula viscosa, Lavandula stoechas, Olea europea and Pistacia lentiscus. Calicotome villosa has the highest energy and protein (PDI) levels with 0.62 UFL/kg DM, 0.52 UFV/kg DM and 52 g/kg DM of protein. The forage supply is estimated to 2250 FU/ha of energy and 72.6 kg/ha of PDIN, is evaluated at 450 euro/ha. In extensive farming, milk production is estimated to 55 kg/lactation/goat against 51 kg/lactation/goat in intensive farming (control). Goats feeding on pasture allows to reduce alimentary charge and better milk production that remains low qualitatively. Supplementation, to improve quality of milk products, is necessary. [less ▲]

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See detailCASTLE4D: An Archaeological Information System Based on 3D Point Clouds
Luczfalvy Jancsó, Andrea ULg; Billen, Roland ULg; Hoffsummer, Patrick ULg et al

in Lerma, José Luis; Cabrelles, Miriam (Eds.) Proceedings of the Arqueológica 2.0 - 8th International Congress on Archaeology, Computer Graphics, Cultural Heritage and Innovation : Universitat Politècnica de València, Valence 5-7 septembre 2016 (2016)

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See detailIntegrating Social Aspect into Sustainability Assessment of Bio-Based Industries: Towards a Systemic Approach
Rafiaani, P.; Van Passel, S.; Lebailly, Philippe ULg et al

in Ban, Marko et al. (Ed.) 11th Conference on Sustainable Development of Energy, Water and Environment Systems : book of abstracts (2016)

Biobased industries require to be assessed on their positive and negative impacts on sustainable development. However, social factors are usually neglected in the majority of impact assessments of ... [more ▼]

Biobased industries require to be assessed on their positive and negative impacts on sustainable development. However, social factors are usually neglected in the majority of impact assessments of biobased industries: they are mainly focused on environmental performance and (techno)- economic assessments. This review proposes a new systemic approach for assessing and integrating the social dimension into sustainability assessments of biobased industries. First the main methodologies for assessing social impacts in biobased industries are compared. Social Life Cycle Analysis (SLCA) is considered to have promising methodological attributes for biobased industries’ social sustainability assessment, although it is still in its early steps of development. Second, a new systemic framework was developed following the four main iterative steps of an SLCA framework and based on three useful SLCA-based approaches including Product Social Impact Assessment; Prosuite and the UNEP SETAC Guidelines for SLCA of Products. The proposed framework allows incorporating the social impacts into a techno economic assessments (TEA) model through providing both a final social score and separate scores for each indicator category and life cycle phase. The result of this study particularly highlights the importance of considering social issues in biobased industries’design and innovation. Using the proposed systemic approach, industry and policy makers gain a better insight into the full sustainability performance (i.e. including social aspects) of biobased industries. [less ▲]

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See detailNew challenges for the Vietnamese aquaculture sector
Nguyen Thi Khanh Hong, ULg; Tran Thi Nang Thu; Lebailly, Philippe ULg

in Nanhua University; Vietnam University of Commerce; Hue College of Economics (Eds.) International Conference "The economy of Vietnam in the integration period: opportunities and challenges: Proceedings (2016)

The supply chain of seafood in Vietnam has not been effectively designed and operated, and has not contributed to the sustainability of the sector. Problems include the protection of resources ... [more ▼]

The supply chain of seafood in Vietnam has not been effectively designed and operated, and has not contributed to the sustainability of the sector. Problems include the protection of resources, limitations in traceability, food safety issues and lack of branding/eco-certification. The objective of this article is first to characterize the recent development of this sector of economic activity. Particular attention will be linked to the importance of aquaculture in the trade balance of Vietnam. The authors also describe the issues that arise in the various constituent links in the aquaculture industry in Vietnam. [less ▲]

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See detailThe study of ornament and the shaping of a new architecture in 19th century Belgium
Prina, Daniela ULg

in James-Chakraborty, Kathleen (Ed.) Proceedings Of The Fourth International Conference Of The European Architectural History Network (2016)

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See detailIntegrating social aspects into sustainability assessment of biobased industries: Towards a systemic approach
Rafiaani, Parisa; Van Passel, Steven; Lebailly, Philippe ULg et al

in Benoit Norris, Catherine; Norris, Gregory (Eds.) 5th International Social LCA Conference Harvard, Cambridge, USA, June 13 - 15, 2016: book of abstracts (2016)

Considering its potential impacts on development, biobased industries require to be assessed according to the positive and negative effects they can bring to the society. Typically, the implications of ... [more ▼]

Considering its potential impacts on development, biobased industries require to be assessed according to the positive and negative effects they can bring to the society. Typically, the implications of biobased industries are considered in terms of economic, environmental and technical indices while social factors are usually neglected in the majority of impact assessments. This is mainly due to the fact that social issues are not easy to be quantitatively analyzed, measured and monitored. Indeed, the following issues need to be addressed: (i) how the social dimension is understood from different stakeholders’ perspective; (ii) how the social pillar can be properly integrated into sustainability evaluation methodologies which are mainly focused on environmental performance and (techno)-economic assessments of biobased industries. This review paper aims to answer these questions firstly through identifying the main social impacts and indicators of the biobased industries at local level in order to find an answer for the second question by analyzing and comparing the current methodologies for assessing social impacts in bioindustries. These methods mainly include Social Impact Assessment (SIA), Socio-economic Impacts Assessment (SEIA) and Social Life Cycle Analysis (SLCA). The latter, although is in its early steps of development, has been considered to have substantially promising methodological attributes for bioindustries’ social sustainability assessment. Although ongoing research tackles the incorporation of the environmental dimension into extended techno-economic assessments, no integration of the social pillar into such assessments has been made. Given that, this review focuses on the social dimension for integrated sustainability assessments of biobased industries to assess the main social impacts resulting from each operation or from the bioenergy sector. The current review focuses on the importance of social sustainability indicators and evaluation techniques. By discussing the methodologies for evaluating social impacts, a systemic methodology for assessing and integrating the social dimension into the sustainability assessments of bioindustries is developed, considering the four main iterative steps of an SLCA framework and three useful SLCA-based approaches including Product Social Impact Assessment; Prosuite and the UNEP SETAC Guidelines for SLCA of Products. It is concluded that the term systemic analysis implies that the whole approach needs the capacity to understand different subsystems and relations between them. Accordingly, the systemic assessment of biobased technologies should simultaneously include technological, economic, social and environmental dimensions. The result of this study identifies social impacts in the bioeconomy and particularly highlight the importance of considering social issues in biobased industries’ design and innovation. [less ▲]

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See detailintroduction et inter-duction; les règles du jeu.
Bodart, Céline ULg

in YOUNES, Chris; BONNAUD, Xavier; Bodart, Céline (Eds.) Encore l'architecture, encore la philosophie. (2016)

The international conference « encore l'architecture – encore la philosophie » is an initiative of the GERPHAU lab, research group for Philosophy, Architecture, Urban (Architecture School of Paris La ... [more ▼]

The international conference « encore l'architecture – encore la philosophie » is an initiative of the GERPHAU lab, research group for Philosophy, Architecture, Urban (Architecture School of Paris La Villette, UMR 7218 CNRS-Lavue), in partnership with Cité de l'architecture et du patrimoine, UMR-Lavue (Laboratoire Architecture, Ville, Urbanisme, Environnement) and philAU (a scientific thematic network : Philosophy, Architecture, Urban). This conference is the first ARENA conference (Architectural Research in Europe Network Association), a shared platform that aims to promote, support, develop and disseminate high-quality research in all fields of architecture in the widest sense. The network already includes researchers from leading European architecture schools. Synopsis. In Paris in 1987, a first event was held to celebrate the meeting of two disciplinary fields, entitled “Mesure pour mesure, architecture et philosophie”. Architects and philosophers were invited to discuss together how philosophy could capture better what determines architecture itself. Now, on the occasion of a new international conference, the GERPHAU Lab seeks to restate and refresh the question of the meeting of architecture and philosophy, by asking: what still remains today of our cross-over practices? ENCORE L'ARCHITECTURE, ENCORE LA PHILOSOPHIE. To build together these reflections about the future of our respective practices, why don't we hold to the hypothesis that our recent histories, in architecture as well as philosophy, could be written through the addition of a few prefixes? In linguistics, a prefix does not only serve the formation of a new word: it also regenerates the question of the meaning of the word. It is a discursive invention and its real strength lies in its ability to engage a new type of relationship with the world. Re-, alter-, eco-, co-, bio-, etc., these prefixes have clung to both our discourses as well as our disciplines. But in what way do they question the meaning of our practices? In archi-tecture as in philo-sophy, how do these successive re-definitions put the fundamentals into question, and how do they disturb their alleged unity inherited from Ancient Greece? And, moreover, how does the over-use of prefixes help us to understand what still makes sense in philosophy, or what still makes sense in architecture? The key issue of this conference, ‘Encore l'architecture, Encore la philosophie’, will be to trace backwards the stream of architectural and philosophical ideas through the thematic of the prefix as constituting a form of narrative. The conference will aim to trace the paths of their development, and other influencing factors, so as to return to those meetings between architecture and philosophy which already have oriented, re-oriented and sometimes dis-oriented our speech. It will be a meeting at which we invite participants to retell the story of our disciplines in order to grasp what it is still unique today about our practices. [less ▲]

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See detailLa signature dans les lettres du duc de Bourgogne Philippe le Bon
Dumont, Jonathan ULg; Marchandisse, Alain ULg

in Dumézil, Bruno; Vissière, Laurent (Eds.) Epistolaire politique II : « Authentiques et autographes (IVe–XVIe siècles) » (2016)

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See detailEffect of the method and the period of oil extraction on chemical composition of olive cake in northern of Morocco
El Otmani, Samira ULg; Ayadi, Mohamed; Chentouf, Mouad et al

in Bayrou, Calixte; Cabaraux, Jean-François; Delguste, Catherine (Eds.) et al Proceedings of the 3rd FARAH Day (2016)

In the northern of Morocco, goat population is the most dominant. His diet is based on forest rangelands. Therefore, it is necessary to diversify and improve its feed calendar. Olive cake is by-product of ... [more ▼]

In the northern of Morocco, goat population is the most dominant. His diet is based on forest rangelands. Therefore, it is necessary to diversify and improve its feed calendar. Olive cake is by-product of oil extraction that widely available in the region with important production. It can be a feed resource of ruminant. This resource is produced by three methods and for limited period. This work aims to determine the effect of different oil extraction method and period on the chemical composition of olive cake in northern of Morocco. Twenty-seven samples of olive cake were collected from 3 mills by each extraction method (mechanical pressure, centrifugation 2 and 3 phases) during three periods (November, December and January). The chemical composition (dry matter, fat, mineral matter, crude protein and fibers) of the collected samples was determined by AOAC methods (1997). The extraction method had a significant effect on all parameters of the chemical composition with the exception of the fat and crude protein (P<0.05). The olive cake obtained by centrifugation 2 phases method had lower dry matter and fibers. The period had no effect on chemical composition, which eases the introduction of olive cake in the diet of ruminants. The olive cake of 2 phases is the most suitable for feed but has a reduced shelf life, which requires the development of a suitable conservation mode. [less ▲]

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See detailLes droits fondamentaux, limites à l’autonomie en matière économique des entités qui composent l’État fédéral belge
Miny, Xavier ULg

in Hoc, Arnaud; Wattier, Stéphanie; Willems, Geoffrey (Eds.) Human Rights as a Basis for Reevaluating and Reconstructing the Law (2016)

En l’espace d’un demi-siècle, la Belgique a évolué d’une structure unitaire vers celle d’une fédération. Désormais, les compétences en matière de politique économique sont distribuées entre les niveaux ... [more ▼]

En l’espace d’un demi-siècle, la Belgique a évolué d’une structure unitaire vers celle d’une fédération. Désormais, les compétences en matière de politique économique sont distribuées entre les niveaux fédéral et fédéré. Face à cet éclatement des prérogatives économiques susceptible d’engendrer la division, il existe des mécanismes qui ont, au contraire, une vocation centralisatrice et qui sont destinés à garantir une certaine forme de cohérence entre les différentes entités compétentes, tout en évitant la poursuite de politiques qui entraineraient une concurrence dommageable entre elles. Cette recherche vise à identifier en quoi les droits fondamentaux peuvent limiter les compétences économiques. En effet, au-delà de la question de savoir quelles compétences en matière économique sont attribuées à l’autorité fédérale et lesquelles ressortissent aux entités fédérées, se pose la question du rôle que jouent les droits fondamentaux, tels qu’ils se présent au niveau national et au niveau international, comme facteurs centripètes. [less ▲]

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See detailcolour in the urban environment: a tool for the chromatic analysis of spatial coherence
Nguyen, Ngoc Luan ULg; Teller, Jacques ULg

in XII Conferenza del Colore : Book of Abstracts (2016)

Colour is an essential component of urban landscapes that inform us about the status and history of a place, through relations of dominance, integration or uniformity that can be observed between its ... [more ▼]

Colour is an essential component of urban landscapes that inform us about the status and history of a place, through relations of dominance, integration or uniformity that can be observed between its built components. It can be shown that many traditional cities appear to be « chromatically polynuclear » in Europe and that each epoch, each type of urban area, each city is characterized by its own colour palette, which can be more or less homogeneous. Still the urban mutations observed in the second part of the 20th century generated a significant increase in the entropy of contemporary extentions of cities, which induced a loss of meaning and coherence by dislocating permanent structures set up in the past that maintained some integrity of urban landscapes. City entrances for instance, where old buildings mix with commercial equipment, show an unprecedented heterogeneity in their colour palettes. Few studies have focused on the description of these emerging configurations. Their complexity both in formal and chromatic aspects is certainly a difficulty from the perspective of their characterization. This can be explained by the lack of tools for an objective analysis of colour palettes in an urban environment. Given this lack of both affordable and reliable assessment method of colour that has been observed in the field of urban design, the research presents the implementation of a tool that can be used to characterize chromatic attributes of an urban area. The challenge is to provide statistical and quantitative answers to these questions: how is colour organized, how does it develop its own structure in the city? How can colour appear as an indicator of homogeneity and spatial coherence? As colour can be represented in a tri-dimensional space, we use a k-means statistical clustering technique, based on a data partitioning algorithm, to produce a chromatic classification of building facades. Once the chromatic categories are defined through the developed assessment method, the question of spatial coherence is investigated using Shannon entropy. Our method was tested through an application to several urban fragments of the city of Liège (Belgium) and the research highlights the differences between historic urban areas (historic center, 19th century developments) with new urban configurations (city entrances, commercial and periurban zones). [less ▲]

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See detailEffects of acoustic degradations on cover song identification systems
Osmalsky, Julien ULg; Embrechts, Jean-Jacques ULg

in International Congress on Acoustics: ICA 2016 (2016)

Cover song identification systems deal with the problem of identifying different versions of an audio query in a reference database. Such systems involve the computation of pairwise similarity scores ... [more ▼]

Cover song identification systems deal with the problem of identifying different versions of an audio query in a reference database. Such systems involve the computation of pairwise similarity scores between a query and all the tracks of a database. The usual way of evaluating such systems is to use a set of audio queries, extract features from them, and compare them to other tracks in the database to report diverse statistics. Databases in such research are usually designed in a controlled environment, with relatively clean audio signals. However, in real life conditions, audio signals can be seriously modified due to acoustic degradations. For example, depending on the context, audio can be modified by room reverberation, or by added hands clapping noise in a live concert, etc. In this paper, we study how environmental audio degradations affect the performance of several state-of-the-arty cover song recognition systems. In particular, we study how reverberation, ambient noise and distortion affect the performance of the systems. We further investigate the effect of recording or playing music through a smartphone for music recognition. To achieve this, we use an audio degradation toolbox to degrade the set of queries to be evaluated. We propose a comparison of the performance achieved with cover song identification systems based on several harmonic and timbre features under ideal and noisy conditions. We demonstrate that the performance depends strongly on the degradation method applied to the source, and quantify the performance using multiple statistics. [less ▲]

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See detailMethod for detecting interest points in images using angular signatures
Grogna, David ULg; Boutaayamou, Mohamed ULg; Verly, Jacques ULg

in IEEE Xplore Digital Library (2016)

We present an innovative method for detecting interest points (IPs) in grayscale and color images. It is based on the use of angular signatures (ASs), produced by spinning, at each pixel in the image, an ... [more ▼]

We present an innovative method for detecting interest points (IPs) in grayscale and color images. It is based on the use of angular signatures (ASs), produced by spinning, at each pixel in the image, an "x-tapered, y-derivative, half-Gaussian kernel" in discrete angular steps. By exploiting the AS(s) produced at each pixel, it automatically "classifies" the pixel as being an IP or not. We present preliminary results on synthetic grayscale and real color 2D images, and these confirm the potential value of the method. It can easily be extended from grayscale and color images to images with any number of components, as well as to 3D volumetric images and images on grids of higher dimensionality. It is useful for stereo matching and video tracking. [less ▲]

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See detailHousehold risk management strategies for coastal aquaculture risks: the case of clam farming in Thaibinh province, Vietnam
Ngo Thi Thu Hang, ULg; Tran Huu, Cuong; Lebailly, Philippe ULg

in Vietnam National University of Agriculture (VNUA); Académie de Recherche et d'Enseignement Supérieur (ARES CCD) (Eds.) Proceedings "International conference on Agriculture development in the context of international integration: opportunities and challenges". 2016 ICOAD, December 7-8, Hanoi, Vietnam (2016)

Endowed with 3,260 km of coastal line and 112 estuaries, Vietnam has a high potential for aquaculture development. However, long coastal line is also embedded with natural high risks under climate changes ... [more ▼]

Endowed with 3,260 km of coastal line and 112 estuaries, Vietnam has a high potential for aquaculture development. However, long coastal line is also embedded with natural high risks under climate changes and sea level rise. Vietnam is ranked at the 18th in the 2015 world risk index and the vulnerability index of 50.9%. Relying on coastal resources, aquatic farmers have adopted a number of strategies to cope with aquaculture risks. By using the OECD holistic approach, this research used several tools to identify farmer's performance on clam farming practices and their risk management strategies (RMS) in Thaibinh province (the largest area of the clam production in the north and north central coastal part of Vietnam). RSMs are found of diversification and flexibility among farmers. For production risks, the RSMs are: (1) enlarging clam raising size and (2) actively controlling clam production by experience and technical innovations. For market risks, the RSM is searching for more clam market channels in both input and output market. For financial risks, RSMs are (1) securing family from clam farming loss by diversifying livelihood activities and (2) accessing secure financial sources in term or interest and bond conditions. Although some RSMs had resulted positive impacts but in overall, the clam farming risks have not managed well by those strategies due to the limitation in capacity of households comparing with level of risks. To cope better with different risks in clam sector, besides the adjustment in RSMs of farmers themselves, it is necessary to have the intervention from government (from national to local level) to address the aquaculture risks which the farmers cannot handle by themselves, such as (1) addressing the issue of polluted wastewater to the clam field; and (2) more focusing in supporting farmer in linkages to the both formal financial market and output market. In addition, supports for technical training targeting on improving farmer's skills and knowledge in farming decision making and market information is also of high value to clam farmers in coping with farming risks. [less ▲]

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See detailMathématique et culture numérique : supports aux nouvelles formes d’expression architecturale
Jancart, Sylvie ULg; Stals, Adeline ULg; Gallas, Mohamed-Anis

in Goulette, Jean-Pierre, Ferries, Bernard (Ed.) Actes du Séminaire de Conception Architecturale Numérique (2016)

Les mathématiques occupent une place importante dans les procédés de conception et de matérialisation qui caractérisent l’architecture non standard. Cette forme d’expression architecturale fait appel à un ... [more ▼]

Les mathématiques occupent une place importante dans les procédés de conception et de matérialisation qui caractérisent l’architecture non standard. Cette forme d’expression architecturale fait appel à un enchainement de dispositifs numériques matérialisant ainsi le concept de continuum numérique. Dans ce sens, il est important de réduire l’écart qui se crée entre les possibilités techniques actuelles et les connaissances mathématiques utilisées dans les nou-velles méthodes de conception. Cet article propose une analyse des interactions entre deux disciplines, la géométrie architecturale et les supports numériques appliqués de la conception à la fabrication, ainsi que l’intérêt de leur intégration dans les démarches de conception architecturales actuelles. [less ▲]

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See detailSymboles et abréviation chrétiens dans les papyrus littéraires grecs à contenu profane (IVe-VIIe siècles)
Carlig, Nathan ULg

in Derda, Tomasz; Urbanik, Jakub; Lajtar, Adam (Eds.) Proceedings of the 27th International Congress of Papyrology, Warsaw 29.07—3.08 2013 (2016)

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See detailPerino del Vaga maestro di Marcello Venusti
Geremicca, Antonio ULg

in Agosti, Barbara; Leone, Giorgio (Eds.) Intorno a Marcello Venusti (2016)

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See detailCharacterization of Nappe Vibration on a Weir
Lodomez, Maurine ULg; Pirotton, Michel ULg; Dewals, Benjamin ULg et al

in Sustainable Hydraulics in the Era of Global Change (2016)

The nappe vibration phenomenon may affect numerous prototype structures, such as gates and spillways, when they operate under low head conditions. This phenomenon, which is far not well understood and ... [more ▼]

The nappe vibration phenomenon may affect numerous prototype structures, such as gates and spillways, when they operate under low head conditions. This phenomenon, which is far not well understood and poorly controlled, produces frequency oscillations in the thin flow nappe cascading downstream of the weir. These oscillations result in a disturbing noise production that increases the environmental and societal impacts of the hydraulic structure. Given limited information available regarding the physical processes of this phenomenon, a detailed investigation has been undertaken to characterize the flow for free-overfall structures where nappe vibration may be of concern. The research conducted on a prototype-scale linear weir model (weir length of 3.5 m and a fall height of 3 m) at the Engineering Hydraulics laboratory of the University of Liège enable to describe the flow and nappe vibration by using image and sound analysis. The paper presents the first quantitative results of the study. [less ▲]

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See detailLes documents officiels romains d’époque républicaine et du Principat d’Auguste
Famerie, Etienne ULg

in Pierangelo Buongirno (Ed.) Texte regenerieren, Kontexte rekonstruieren (2016)

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See detailA quantitative approach to the concept of concrete repair compatibility
Bissonnette, Benoît; Modjabi-Sangnier, François; Courard, Luc ULg et al

in Dehn, Frank; Beushausen, Hans (Eds.) Concrete Repair, Rehabilitation and Retrofitting IV (2016)

The work reported in this paper is part of a wider research program intended to provide the repair industry with improved fundamental knowledge to implement rational design methods and rules for repairs ... [more ▼]

The work reported in this paper is part of a wider research program intended to provide the repair industry with improved fundamental knowledge to implement rational design methods and rules for repairs. In that regard, there is a strong need to study the fundamental relationships and parameters that underlie the repair compatibility concepts, in particular those relating to dimensional compatibility. In the first part of the paper, classical formulas derived for thick cylindrical specimens were used to analyze the tensile stress buildup in annular restrained shrinkage test specimens, taking into account the restraining conditions the investigated ring test method and the individual concrete properties/phenomena determined experimentally (elastic modulus, creep coefficient, drying shrinkage deformation). By comparing the ring test results with the calculated tensile stresses, the validity and accuracy of the theoretical approach could be appraised. A quantitative approach for the evaluation of the performance of concrete repair in terms of dimensional compatibility was then developed. Derived from the basic strain balance approach (ratio between the total deformability in tension and the drying shrinkage deformation), a parameter referred to as dimensional compatibility index (CI) was introduced in order to analyze the evolution of dimensional compatibility as a function of time for a given concrete mixture, taking into account the actual degree of restraint in the element. Compatibility index evolution curves were calculated for various repair concrete mixtures in order to highlight material behavior relating to composition parameters and temperature. As it requires the evaluation of a limited number of individual properties that are for most readily available (i.e. strength, elastic modulus, shrinkage), the compatibility index expressed in terms of deformation carries a lot of potential as a relatively simple and convenient analytical tool for assessing the cracking sensitivity of concrete repair materials. Overall, it can be stated that a good correlation was found between the ring test results and the tensile stress values calculated based on individual concrete properties / phenomena and that the proposed calculation method lays ground for evaluating quantitatively the dimensional compatibility of repair materials and defining suitable performance criteria. [less ▲]

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See detailThe syntax-semantics Interface in Earlier Egyptian: A Case study in Verbs of Cognition
Winand, Jean ULg

in Coping with Obscurity: The Brown Workshop on Earlier Egyptian Grammar (2016)

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See detailExperimental validation of heat transport modeling in district heating networks
Sartor, Kevin ULg

in Proceedings of Conference (2016)

District heating networks (DHN) are generally considered as a convenient, economic and environmental-friendly way to supply heat to a large amount of buildings. Some modelling technics are required to ... [more ▼]

District heating networks (DHN) are generally considered as a convenient, economic and environmental-friendly way to supply heat to a large amount of buildings. Some modelling technics are required to consider the dynamic behaviour of district heating network to design them correctly, spare investment costs and limit the heat losses related to the use of a too high operating temperature. For the same reasons, the DHN control or retrofit of installations also requires the assessment of the DHN dynamic behaviour. To achieve this, the heat transport in DHN, which is one of the key issues in the behaviour of a whole centralized heating system, has to be correctly modelled. Previous work evidenced current limitations of one dimensional finite volume method to model heat transport in pipes and proposed an alternative method considering the thermal losses and the inertia of the pipes. The present contribution intends to experimentally validate this model on a test rig facility available in the Thermodynamics laboratory of the University of Liège (ULg, Belgium) and on an existing district heating network. For both experimental facilities, the current model shows good agreement between experimental data and simulation results for a large range of water velocities. Moreover, it is shown that the thermal inertia of the pipe has a significant influence on the outlet pipe temperature profile. [less ▲]

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See detailZola in Sciascia: Una nota su Candido (1977) e sul corpo
Curreri, Luciano ULg

in Baldassarri, Guido (Ed.) I cantieri dell’italianistica. Ricerca, didattica e organizzazione agli inizi del XXI secolo. (2016)

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See detailFundamental approach for the concept of concrete repair compatibility
Courard, Luc ULg; Bissonnette, Benoît; Garbacz, Andrzej

in Dehn, Frank (Ed.) Concrete Repair, Rehabilitation and Retrofitting IV (2016)

Before being translated in terms of physical, mechanical and chemical of materials, the initial step for evaluating compatibility is interface creation. The thermodynamic properties of the materials as ... [more ▼]

Before being translated in terms of physical, mechanical and chemical of materials, the initial step for evaluating compatibility is interface creation. The thermodynamic properties of the materials as well as transport mechanisms – diffusion, capillary succion – at the interface and roughness of the concrete substrate are acting from the beginning and influencing the durability of the bond strength. A review of the main parameters influencing bond development is presented on the base of the equilibrium of the surface free ener-gies of liquid and solid, applied to the concept of repair mortars, coating and hydrophobic treatments [less ▲]

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See detailDisrupted interaction between memory and self in patients with Alzheimer’s disease
Genon, Sarah ULg; Salmon, Eric ULg; Collette, Fabienne ULg et al

in Proceedings of the 6th International Conference on Memory (2016)

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See detailUne analyse dynamique des interactions entre acteurs portuaires et leurs effets sur l’efficience d’un port pétrolier
Belaid, Emna ULg; Rigo, Philippe ULg; Cools, Mario ULg

in Recueil des articles des 34èmes Rencontres Universitaires de Génie Civil de l'AUGC (2016)

The port is a heterogeneous entity which includes a set of actors whose objectives are sometimes contradictory. The analysis of their interactions allows us to understand the mechanism that governs the ... [more ▼]

The port is a heterogeneous entity which includes a set of actors whose objectives are sometimes contradictory. The analysis of their interactions allows us to understand the mechanism that governs the port management. This mechanism influences the port performance. In this article, we analyze port efficiency as a dynamic model. The latter is based on a framework established by a systemic analysis. From the simulations performed, it may be concluded that the parameters "loading rate" and "Connector dimension" are the most important parameters. Investment in new facilities for the port of La Skhira (Sfax, Tunisia) is our main recommendation. [less ▲]

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