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See detailCROSSRADS, magazine sonore du blues et des musiques américaines
Sacré, Robert ULiege

Diverse speeche and writing (2017)

CROSSROADS, magazine sonore du blues et des musiques américaines ............... infos www.facebook.com/robert.sacre.9

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See detailEssay of Siganus sutor aquaculture in Madagascar: for promising alternative activity for traditional fishermen
Ravelohasina, Helga; Rasolofonirina, R.; Mahafina, J. et al

Poster (2017, November)

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See detailL'enquête sur le fragment apulien Kiev 147 a
Cuvelier, Graham ULiege

in Mètis : Revue d'Anthropologie du Monde Grec Ancien : Philologie, Histoire, Archéologie (2017), 15

Starting with a drawing of the late 19th century, completed by a recent and unpublished picture, this article presents the journey of an Apulian fragment attributed to the circle of the Darius Painter ... [more ▼]

Starting with a drawing of the late 19th century, completed by a recent and unpublished picture, this article presents the journey of an Apulian fragment attributed to the circle of the Darius Painter. This journey is associated with the history of the research related to this fragment, from its discovery in Ruvo in 1869 until its rediscovery in 2000 in Kiev. Then come a description and an iconographic analysis of the scene depicted on it, followed by the interpretations which have been given to it. [less ▲]

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See detailComparison of nanofluidic and ultra-high performance liquid chromatography-tandem mass spectrometry for high sensitive pharmacokinetic studies of estrogens starting from whole blood microsampling
Nys, Gwenaël ULiege; COBRAIVILLE, Gaël ULiege; Kok, Miranda ULiege et al

in Journal of Chromatography. A (2017), 1524

Pharmacokinetic (PK) studies on small animals are challenging as only small volumes of samples are available, in which the analyte is present at low concentration in a complex matrix. In this context, the ... [more ▼]

Pharmacokinetic (PK) studies on small animals are challenging as only small volumes of samples are available, in which the analyte is present at low concentration in a complex matrix. In this context, the use of miniaturized analytical techniques may provide undeniable advantages in terms of sensitivity, sample and solvent consumption compared to the reference UHPLC-MS/MS methods In this study, we present the development of a nanofluidic-LC-MS/MS method to analyze two model analytes of therapeutic interest, namely estradiol (E2) and estetrol (E4) after microsampling with volumetric absorptive microsampling (VAMS) devices, an innovative sampling technique to collect small volumes of whole blood. The nanofluidic LC-MS/MS method was developed using an experimental design to find the optimal conditions to analyze both E2 and E4 with the highest sensitivity. Subsequently, the optimized method was validated according to ICH guidelines and compared to a previously developed UHPLC-MS/MS method. A limit of quantitation of 50. pg/ml was reached with the LC-chip method, which is 50 times better than UHPLC-MS/MS. Both methods were then critically evaluated from the analytical and operational points of view. Finally, the quantitation of estrogens after whole blood microsampling was compared with the results obtained with the corresponding plasma samples. © 2017 Elsevier B.V. [less ▲]

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See detailExperimental and theoretical analysis of shear bolted connections for tubular structures
D'Antimo, Marina ULiege; Demonceau, Jean-François ULiege; Jaspart, Jean-Pierre ULiege et al

in Journal of Constructional Steel Research (2017), 138

In this paper, numerical and experimental investigations devoted to the evaluation of the bearing resistance of tubular members with gusset plates and through-all long bolts are presented. Unlike lap ... [more ▼]

In this paper, numerical and experimental investigations devoted to the evaluation of the bearing resistance of tubular members with gusset plates and through-all long bolts are presented. Unlike lap shear joints, the analysed connection evidences a reduced confinement of the bearing area associated to the use of long bolts and the presence of a gap in the member, which can lead, consequently, to a reduction of the bearing resistance. In order to investigate the behaviour of shear connections made up of thin and thick SHS (Square Hollow Section) profiles and long bolts, an experimental test campaign including 24 specimens and FE simulations have been conducted. Both experimental and FE results have confirmed the influence of local instability on the hole in bearing resistance of thin profiles and the poor accuracy of the available standards for this particular joint typology. In particular, the performed comparisons have shown that, for thin profiles, EC3 model is likely to overestimate the resistance, while for higher thickness of the SHS conservative predictions are obtained. The present paper presents the conducted experimental and numerical investigations, highlighting at the end the need for a proper formulation able to account for the local instability effect on the bearing resistance. [less ▲]

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See detailThe Semiotics of Design in Media Visualization: Mereology and Observation Strategies
Dondero, Maria Giulia ULiege

in Information Design Journal (2017), 23(2), 208-218

The purpose of this paper is to discern in what ways the semiotic methods of the Post- Greimasian French structuralist and the American Peircian traditions can enrich the study of contemporary methods of ... [more ▼]

The purpose of this paper is to discern in what ways the semiotic methods of the Post- Greimasian French structuralist and the American Peircian traditions can enrich the study of contemporary methods of computational analysis of culture, particularly in the field of Cultural Analytics as implemented by the Russian Art Historian and Computer Scientist Lev Manovich. These semiotic approaches will be helpful in understanding what kinds of visualizations are being generated for use in Cultural Analytics, and what kinds of operations the observer must perform in order to experiment with scientific visualizations of this information. [less ▲]

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See detailDu texte à la pratique : pour une sémiotique expérimentale
Dondero, Maria Giulia ULiege

in Semiotica (2017), 219

Our essay aims at continuing the work of Jacques Fontanille, who developed a Semiotics of Practice next to a Semiotics of Text. This work, and especially Pratiques sémiotiques (2008), takes up a problem ... [more ▼]

Our essay aims at continuing the work of Jacques Fontanille, who developed a Semiotics of Practice next to a Semiotics of Text. This work, and especially Pratiques sémiotiques (2008), takes up a problem already formulated by Jean-Marie Floch in the article « Êtes-vous arpenteurs ou somnambules ? L’élaboration d’une typologie comportementale des voyageurs du métro » (1990). We will initially retrace the debate about the epistemological relationship between text and practice, outlining the forms of enunciative praxis. Secondly, we propose the concept of we will consider the visualization that we call ‘notation’: this analytical form of mediation between text and practice does not have the same status of in-vivo textualisations, but it works like an ex-post reconstruction which highlights the main gestures and exchanges while performing their grammaticalization. A more general aim of this essay is an enquiry into the legitimate objects of textual semiotics: what are the objects that it can analyze without betraying its principle of immanence, but also without being unable to analyze practice [less ▲]

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See detailL’événement énonciatif en sémiotique de l’image : de Roland Barthes à la sémiotique tensive
Dondero, Maria Giulia ULiege; Colas-Blaise, Marion

in La part de l'oeil (2017), 31

Dans cet article, nous visons à montrer que la sémiotique tensive développée par Zilberberg permet de revisiter utilement les notions barthésiennes de studium et de punctum et, leur permet de surcroît, de ... [more ▼]

Dans cet article, nous visons à montrer que la sémiotique tensive développée par Zilberberg permet de revisiter utilement les notions barthésiennes de studium et de punctum et, leur permet de surcroît, de devenir un outil pour l’analyse de l’image. [less ▲]

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See detailLong-term trends in trait structure of riverine communities facing predation risk increase and trophic resource decline
Latli, Adrien; Descy, Jean-Pierre; Mondy, Cédric P et al

in Ecological Applications (2017), 27(8), 2458-2474

Many large European rivers have undergone multiple pressures which have strongly impaired ecosystem functioning at different spatial and temporal scales. Global warming and other environmental changes ... [more ▼]

Many large European rivers have undergone multiple pressures which have strongly impaired ecosystem functioning at different spatial and temporal scales. Global warming and other environmental changes have favoured the success of invasive species, deeply modifying the structure of aquatic communities in large rivers. Some exogenous species could alter trophic interactions within assemblages by increasing the predation risk for potential prey species (top-down effect) and limiting the dynamics of others via resource availability limitation (bottom-up effect). Furthermore, large transboundary rivers are complex aquatic ecosystems which have often been poorly investigated so that data for assessing long-term ecological trends are missing. In this study, we propose an original approach for investigating long-term combined effects of global warming, trophic resource decrease, predation risk and water quality variations on the trait-based structure of macroinvertebrate and fish assemblages over 26 years (1985-2011) and 427-km stretch of the river Meuse (France and Belgium). The study of temporal variations in biological, physiological and ecological traits of macroinvertebrate and fish allowed identifying community trends and distinguishing impacts of environmental perturbations from those induced by biological alterations. We provide evidence, for this large European river, of an increase in water temperature (close to 1°C) and a decrease in phytoplankton biomass (- 85%), as well as independent effects of these changes on both invertebrate and fish communities. The reduction of trophic resources in the water column by invasive molluscs has dramatically affected the density of omnivorous fish in favour of invertebrate-feeders, while scrapers became the major feeding guild among invertebrates. Macroinvertebrate and fish communities have shifted from large-sized organisms with low fecundity to prolific, small-sized organisms, with early maturity, as a response to increased predation pressure. [less ▲]

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See detailAnalyse économique des plateformes collaboratives
Gautier, Axel ULiege

in Rue, Guillaume (Ed.) Aspects juridiques de l'économie collaborative (2017)

On observe une multitude d’initiatives, qu’elles soient citoyennes ou commerciales, pour partager les ressources entre particuliers. Aujourd’hui il existe des sites pour partager ou échanger à peu près ... [more ▼]

On observe une multitude d’initiatives, qu’elles soient citoyennes ou commerciales, pour partager les ressources entre particuliers. Aujourd’hui il existe des sites pour partager ou échanger à peu près tout : voitures, trajets, appartements, outils, services, objets de seconde main, etc. Cette nouvelle tendance, que l’on range sous le vocable d’économie collaborative, fascine autant qu’elle inquiète. D’un coté, le partage de ressources sous-utilisées a de nombreux avantages, parmi ceux-ci une mutualisation des coûts pour les utilisateurs et une baisse de la pression sur l’environnement. D’un autre coté, les craintes sont nombreuses, notamment vis-à-vis des nouvelles formes de travail qui se développent, précaires, sous-payés et ultra-flexibles. Ce chapitre écrit par un économiste a pour objectif de présenter quelques concepts économiques qui permettent de mieux comprendre le phénomène d’économie collaborative. [less ▲]

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See detailDetermination of loading scenarios on buildings due to column damage
Colomer, Carles Segura; Hamra, Lotfi; D'Antimo, Marina ULiege et al

in Structures (2017), Volume 12

The majority of imaginable (and relevant) accidental scenarios on building structures are initiated at the ground level by a column suffering damage, mainly due to a localized explosion or a vehicle ... [more ▼]

The majority of imaginable (and relevant) accidental scenarios on building structures are initiated at the ground level by a column suffering damage, mainly due to a localized explosion or a vehicle impact. The transmitted vertical forces from the column to the structure are decisive in understanding the response of the building and are the subject of analysis of this paper. The classic definition of a column loss scenario is extended here by means of a simplified analytical approach to characterize the axial forces appearing in the column during the damage process. A simple closed-form solution is proposed to define the loading scenario on the structure and compared to the classic rectangular (un)loading approach. In certain cases, the proposed analysis shows a more unfavorable loading situation for the structure, which needs to be accounted for during design. [less ▲]

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See detailCompte-rendus
Sacré, Robert ULiege

in Jazz Around (2017)

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See detailUltrasonic roll bite measurements in cold rolling - roll stress and deformation
Carretta, Yves; Hunter, Andrew; Boman, Romain ULiege et al

in Journal of Materials Processing Technology (2017), 249

In cold rolling of thin metal strip, contact conditions between the work rolls and the strip are of great importance: roll deformations and their effect on strip thickness variation may lead to strip ... [more ▼]

In cold rolling of thin metal strip, contact conditions between the work rolls and the strip are of great importance: roll deformations and their effect on strip thickness variation may lead to strip flatness defects and thickness inhomogeneity. To control the process, several online measurements are usually carried out such as the rolling load, forward slip and strip tensions at each stand. Shape defects of the strip are usually evaluated after the last stand of a rolling mill thanks to a flatness measuring roll. However, none of these measurements is made within the roll bite itself due to the harsh conditions taking place in that area. This paper presents a sensor capable of monitoring roll deformations as well as roll radial stresses in situ and in real time. The sensor emits ultrasonic pulses that reflect from the roll surface. The time-of-flight (ToF) of the pulses is recorded during the testing. The sensor system was incorporated into a work roll and tested on a pilot rolling mill. Measurements were taken as steel strips were rolled under different strip elongation. Roll deformation and radial stresses obtained from the experimental data are in good agreement with numerical results computed with a cold rolling model developed in non-linear Finite Element software. [less ▲]

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See detailLife Cycle Assessment of railway infrastructure in Belgium
Merchan Arribas, Angel ULiege; Belboom, Sandra ULiege; Léonard, Angélique ULiege

in [avniR] conference. Life Cycle Management, the pathway for ecotransition. 2017 Conference proceedings (2017, November)

In the framework of the BRAIN-TRAINS project, the environmental impact of rail freight transport in Belgium has been analysed using the Life Cycle Assessment (LCA) methodology. The rail freight transport ... [more ▼]

In the framework of the BRAIN-TRAINS project, the environmental impact of rail freight transport in Belgium has been analysed using the Life Cycle Assessment (LCA) methodology. The rail freight transport system has been divided in three sub-systems: rail transport operation, rail equipment (locomotives and wagons) and rail infrastructure. For the sub-system rail infrastructure, a detailed study of the life cycle phases of construction, maintenance and disposal of infrastructure has been conducted. We have collected specific information related to the Belgian railway infrastructure from both literature sources and directly from Infrabel (the Belgian railway infrastructure manager) through the use of questionnaires. The purpose of this paper is to give an overview of the methodology used to analyse the LCA of the railway infrastructure in Belgium as a part of the rail freight transport system. [less ▲]

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See detailStandardized Settling Cell to Characterize Liquid-Liquid Dispersion
Leleu, David ULiege; Pfennig, Andreas ULiege

Scientific conference (2017, November)

Continuous settlers are used in many bio-based processes for separating liquid-liquid dispersion. In an efficient process, this downstream operation must be sufficiently well designed. Since coalescence ... [more ▼]

Continuous settlers are used in many bio-based processes for separating liquid-liquid dispersion. In an efficient process, this downstream operation must be sufficiently well designed. Since coalescence depends strongly on trace components, the dispersion needs to be characterized experimentally for each material system of interest, e.g. with respect to settling time. This can be realized in a standardized settling cells at lab scale. Different standardized settling cells have been developed which lead to different characterization procedures and results. It would be desirable to find an optimal standardized settling cell. [less ▲]

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See detailRecent Adavances in the Analytical Chemistry of Cadaveric Decomposition
Focant, Jean-François ULiege; Dubois, Lena ULiege; Perrault, Katelynn ULiege et al

in Journal of Integrated Omics (2017, November)

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See detailAn incremental-secant mean-field homogenization method with second statistical moments for elasto-visco-plastic composite materials
Wu, Ling ULiege; Adam, Laurent; Doghri, Issam et al

in Mechanics of Materials (2017), 114

This paper presents an extension of the recently developed incremental-secant mean-field homogenization (MFH) procedure in the context of elasto-plasticity to elasto-visco-plastic composite materials ... [more ▼]

This paper presents an extension of the recently developed incremental-secant mean-field homogenization (MFH) procedure in the context of elasto-plasticity to elasto-visco-plastic composite materials while accounting for second statistical moments. In the incrementalsecant formulation, a virtual elastic unloading is performed at the composite level in order to evaluate the residual stress and strain states in the different phases, from which a secant MFH formulation is applied. When applying the secant MFH process, the Linear-Comparison-Composite is built from the piece-wise heterogeneous residual strain-stress state using naturally isotropic secant tensors defined using either first or second statistical moment values. As a result non-proportional and non-radial loading conditions can be considered because of the incremental-secant formulation, and accurate predictions can be obtained as no isotropization step is required. The limitation of the incremental-secant formulation previously developed was the requirement in case of hard inclusions to cancel the residual stress in the matrix phase, resulting from the composite material unloading, to avoid over-stiff predictions. It is shown in this paper that in the case of hard inclusions by defining a proper second statistical moment estimate of the von Mises stress, the residual stress can be kept in the different composite phases. Moreover it is shown that the method can be extended to visco-plastic behaviors without modifying the homogenization process as the incremental-secant formulation only requires the definition of the secant operator of the different phase material models. Finally, it is shown that although it is also possible to define a proper second statistical moment estimate of the von Mises stress in the case of soft inclusions, this does not improve the accuracy as compared to the increment-secant method with first order statistical moment estimates. [less ▲]

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See detailHow can new players establish themselves in highly institutionalized labour markets? A Belgian case study in the area of project-based work
Xhauflair, Virginie ULiege; Huybrechts, Benjamin ULiege; Pichault, François ULiege

in British Journal of Industrial Relations (2017)

How can new players seeking to serve nonstandard worker categories (such as project-based workers) establish themselves into labour markets that are highly institutionalized? This paper explores the case ... [more ▼]

How can new players seeking to serve nonstandard worker categories (such as project-based workers) establish themselves into labour markets that are highly institutionalized? This paper explores the case of SMart, a Belgian community-based labour market intermediary that successfully developed solutions to better represent the interests of project-based workers and secure their discontinuous careers. Using an organizational legitimacy approach, we find that labour market entry and growth involve different types of boundary-crossing when addressing the needs of workers that do not fit into established categories. However, to justify boundary-crossing, the new player must complement its pragmatic work on delivering new services and tools with conceptual (cognitive) and structural (moral) legitimation work. [less ▲]

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See detailConclusion
Thirion, Paul ULiege

in Gillet, Florence (Ed.) Inside the user's mind : Étude des pratiques et besoins numériques des utilisateurs dans les centres d’archives et bibliothèques : Actes de la journée d’étude organisée dans le cadre du projet Maddlain le 22 février 2017 (2017, November)

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See detailDe l’Hyper-Polyvalence des Profs…
Focant, Jean-François ULiege

Speech/Talk (2017)

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