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See detailAutomatic Aircraft Cargo Load Planning with Pick-up and Delivery
Lurkin, Virginie ULg; Schyns, Michael ULg

Conference (2013, March 15)

This research aims to develop a new mixed integer linear program to solve the containers assignment problem when pickup and deliveries are considered. Given a pool of ULDs and an aircraft with multiple ... [more ▼]

This research aims to develop a new mixed integer linear program to solve the containers assignment problem when pickup and deliveries are considered. Given a pool of ULDs and an aircraft with multiple destinations, we want to obtain a loading plan determining at which positions the ULDs must be assigned in order to minimize simultaneous the quantity of fuel consumed and the number of re-handles. The loading plan should also ensure a number of structural, safety and manoeuvrability constraints. The model has been tested on real instances and provides encouraging results. [less ▲]

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See detailIntérêts et limites de la dialyse nocturne
Krzesinski, Jean-Marie ULg

Conference (2013, March 14)

Detailed reference viewed: 10 (1 ULg)
See detailBringing the normative content into participatory technology assessment
Lucivero, Federica; Delvenne, Pierre ULg; Van Oudheusden, Michiel ULg

Conference (2013, March 13)

Detailed reference viewed: 12 (0 ULg)
Peer Reviewed
See detailLegal Mobilization against Workplace Discrimination in Belgium and Sweden: Transnationalism and Convergence in Internal Decision-Making?
Lejeune, Aude ULg

Conference (2013, March 13)

Some scholarly works on legal mobilization have highlighted the diffusion of litigious policies to address social problems in Europe, considering that a rights’ revolution was underway; others have ... [more ▼]

Some scholarly works on legal mobilization have highlighted the diffusion of litigious policies to address social problems in Europe, considering that a rights’ revolution was underway; others have identified sources of resistance to the diffusion of the mobilization of the courts as a mechanism for promotion of rights in Europe. European national agencies for equality, created in the 2000s to address discrimination issues, use litigation to produce social change, both at national and supranational levels. Their strategies, if not new, may tend to redefine legal mobilization against unlawful treatment in the workplace in Europe. In this paper, I analyze how the Belgian and the Swedish equality agencies select the cases they bring to court. How and according to which criteria do they choose, among the complaints they receive, the ones which are relevant for litigation? Although litigation policy at the organizational level has been studied in scholarly works, only a few scholars have examined how European networks influence the internal decision-making. How does Equinet, the European network of equality agencies, promote common frames of interpreting and addressing discrimination in the workplace among European countries? Referring to recent works on social structure and individual actor agency, this contribution aims to highlight organizations’ constraints and resources within different legal regimes, current anti-discrimination policies and legal culture. More broadly, this contribution aims to call into question the processes of transnationalisation and policy transfer from one country to another within the European Union. [less ▲]

Detailed reference viewed: 41 (3 ULg)
See detailMapping the interplay of policy paradigms and technology assessment in Flanders and Wallonia (Belgium)
Van Oudheusden, Michiel ULg; Charlier, Nathan ULg; Rosskamp, Benedikt ULg et al

Conference (2013, March 13)

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

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

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See detailPhotogrammetry for forest inventory
Pierrot Deseilligny, Marc; Lisein, Jonathan ULg

Conference (2013, March 12)

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See detailA method allowing long term culture and expansion of chicken primordial germ cells
Tonus, Céline ULg; Waroux, Olivier ULg; Grobet, Luc ULg

Conference (2013, March 12)

We developed an original method allowing long term culture (up to 20 month) of undifferentiated chicken PGCs, with good proliferation rates. We use a co-culture system: PGCs are cultivated in cell culture ... [more ▼]

We developed an original method allowing long term culture (up to 20 month) of undifferentiated chicken PGCs, with good proliferation rates. We use a co-culture system: PGCs are cultivated in cell culture inserts, in the presence of irradiated Buffalo Rat Liver cells. According to our own experience, physical separation of PGCs and feeder cells limits the differentiation of PGCs. Our PGCs lines keep their original phenotype including their gonadal colonization ability. We also developed a novel cryopreservation method based on vitrification, in complement of a slow rate freezing. [less ▲]

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See detailStratification du risque cardiovasculaire selon la fonction
Krzesinski, Jean-Marie ULg

Conference (2013, March 09)

Detailed reference viewed: 16 (2 ULg)
See detailCos: A Typical Example of Hellenistic Religion?
Paul, Stéphanie ULg

Conference (2013, March 09)

In 366 BC, various settlements of the island of Cos synoecised to form a single polis. This political reform led to a reorganization of the older cults evidenced by inscriptions from the mid-fourth ... [more ▼]

In 366 BC, various settlements of the island of Cos synoecised to form a single polis. This political reform led to a reorganization of the older cults evidenced by inscriptions from the mid-fourth century BC. Furthermore, abundant epigraphical material informs us on Coan religious life until the first century BC and archaeological excavations have shown intense building activities within sanctuaries during the third and second centuries BC. This paper will confront the example of Cos with two theoretical models on Greek religion. First, it will test the validity of the “polis religion” model developed by C. Sourvinou-Inwood (1990, 2000) and recently disputed, notably on the grounds that it cannot capture all aspects of religious activity (Kindt 2009, Eidinow 2011). On the other hand, Hellenistic religion has long been viewed as a decline of Classical religion, featuring an “individualization” of religion and an increasing popularity of private and foreign cults. This out-of-date perception is invalidated by the Coan example. Finally, I will ask myself to what extent the nature of the evidence, mainly composed of decrees issued by the polis, can distort our representation of Coan religious life. [less ▲]

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See detailLa théorie des affects chez Theodor Lipps
Gyemant, Maria ULg

Conference (2013, March 08)

Detailed reference viewed: 6 (0 ULg)
See detailAffinités et contrastes entre les phénomènes affectifs et les phénomènes conatifs
Dewalque, Arnaud ULg

Conference (2013, March 08)

Cet exposé concerne un certain débat apparu dans l’école de Franz Brentano. Ce débat, qui comporte de nombreuses facettes, porte sur la nature des phénomènes émotionnels au sens le plus large et, plus ... [more ▼]

Cet exposé concerne un certain débat apparu dans l’école de Franz Brentano. Ce débat, qui comporte de nombreuses facettes, porte sur la nature des phénomènes émotionnels au sens le plus large et, plus particulièrement, sur la relation entre les sentiments (les affects ou phénomènes affectifs) et les volitions (les désirs ou phénomènes conatifs). Je rappelle d’abord la position de Brentano (1874), puis j’expose les objections qui lui ont été adressées par Christian von Ehrenfels dans sa thèse d’habilitation, "Über Fuhlen und Wollen. Eine psychologische Studie" (1887). Enfin, j’examine certaines difficultés de la théorie d’Ehrenfels en m’appuyant notamment sur les remarques critiques de Meinong. Je conclus par quelques observations générales sur le programme brentanien. [less ▲]

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Peer Reviewed
See detailLa non-performativité de l'art performance
Hagelstein, Maud ULg

Conference (2013, March 08)

Objectif : Identifier le rapport critique de la performativité à l’imagination (ou plutôt de la non-performativité à l’imagination) à travers le médium de l’art performance (pour élaborer une nouvelle ... [more ▼]

Objectif : Identifier le rapport critique de la performativité à l’imagination (ou plutôt de la non-performativité à l’imagination) à travers le médium de l’art performance (pour élaborer une nouvelle théorie de la réception). Trois arguments sont développés dans cette intervention : (1) La théorie du performatif elle-même (en tout cas telle qu’énoncée par Austin) évacue la possibilité d’une performativité artistique (d’une performativité qui s’exercerait dans le domaine de l’art ou de la fiction) ; (2) La performance artistique se distingue de l’« objet performatif » - c’est-à-dire de l’objet artistique qui incite le spectateur à des actes et à un comportement spécifiques. Dans le champ de l’art contemporain, l’idée de « performativité » a un tel succès, que l’on parle désormais d’œuvre performative à chaque fois qu’un objet artistique entretient un lien quelconque à l’action, soit qu’il réclame d’être activé par la présence physique de l’artiste ou du spectateur, soit qu’il renvoie directement à une action ou un processus dans lequel il est inscrit ou dont il est issu. En ce sens, la performativité constitue une valeur ajoutée à un objet ou une image – c’est-à-dire à une représentation. Tandis que l’art performance présente de pures actions (dont il serait vain/redondant de rappeler le lien à l’action). (3) L’art performance refuse radicalement (position esthétique radicale) d’exercer un pouvoir sur l’imagination du spectateur. La réaction de ce dernier aux actions visuelles qui lui sont présentées lui appartient en propre, n’est pas guidée/influencée par les intentions de l’artiste. L’essence même de ce genre artistique est d’appeler des lectures toujours/nécessairement subjectives. Souligner la non-performativité de l’art performance reviendrait à montrer qu’elle déjoue par avance toute prise de pouvoir, toute autorité exercée sur le spectateur. Cela reviendrait par conséquent à jeter les bases d’une théorie renouvelée de la réception. [less ▲]

Detailed reference viewed: 32 (1 ULg)
See detailRéguler par la science: le cas des aliments fonctionnels
Hendrickx, Kim ULg

Conference (2013, March 08)

Detailed reference viewed: 10 (1 ULg)
See detailSearching for water in the atmosphere of the hot Saturn WASP-49b
Delrez, Laetitia ULg

Conference (2013, March 08)

At the forefront of comparative exoplanetology, the atmospheric characterization of transiting exoplanets is revealing the intimate nature of these 'new worlds'. In this exciting context, we present here ... [more ▼]

At the forefront of comparative exoplanetology, the atmospheric characterization of transiting exoplanets is revealing the intimate nature of these 'new worlds'. In this exciting context, we present here some preliminary results of our VLT program that consisted in monitoring three transits of the new 'hot Saturn' WASP-49b (Lendl et al. 2012) with the FORS instrument in Multi-Object Spectroscopic mode (MXU). [less ▲]

Detailed reference viewed: 11 (0 ULg)
See detailQuestions de méthodologie pour une thèse en droit public comparé
Bouhon, Frédéric ULg

Conference (2013, March 07)

Detailed reference viewed: 21 (8 ULg)
See detailLes allergies médicamenteuses : point de vue du biologiste
GADISSEUR, Romy ULg

Conference (2013, March 07)

Detailed reference viewed: 3 (0 ULg)
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See detailPRIM related correlations
Mathéi, Axel ULg

Conference (2013, March 07)

Detailed reference viewed: 29 (8 ULg)
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See detailPrévention des courbatures musculaires en pratique sportive
Hody, Stéphanie ULg

Conference (2013, March 07)

Detailed reference viewed: 17 (0 ULg)
See detailSedimentation and active faulting in the western tip of the Gulf of Corinth, Greece
Beckers, Arnaud ULg; Bodeux, Sarah; Beck, Christian et al

Conference (2013, March 06)

The Gulf of Corinth is one of the fastest-spreading intracontinental rift on Earth, a 120km long E-W structure propagating westward toward the Aegean subduction zone. Present day kinematics (GPS data ... [more ▼]

The Gulf of Corinth is one of the fastest-spreading intracontinental rift on Earth, a 120km long E-W structure propagating westward toward the Aegean subduction zone. Present day kinematics (GPS data) indicates an opening direction oriented NNE-SSW and an opening rate increasing westward from 11 mm y-1 in the central part to 16 mm y-1 in the westernmost part. The high extension rate in the western part of the rift would imply a high seismic hazard if faults are not creeping. Our work concerns this western extremity of the Gulf of Corinth, for which we propose an accurate map of submarine faults as well as first chronostratigraphic interpretations. The map is based on two high-resolution seismic reflection surveys (single channel sparker) performed aboard HCMR’s R/V ALKYON, within the frame of SISCOR ANR Project. About 600 km of seismic lines were acquired, with a 200 msTWTT maximum penetration. We identified last glacial maximum (LGM) lowstand erosion surfaces along the northern coast. They made possible the mapping of post-LGM sediment thickness as well as estimates of subsidence rates. Depocenters location is controlled by river deltas where up to 75m of post-LGM sediments are stored. Numerous, up to 15m thick, mass transport deposits fill the central and eastern parts. Seafloor erosion is observed on 7.5 km2 in the western part, involving action of marine currents. The northern coast is subsiding between 1.7 and 2.2 mm y-1. We also mapped the following fault network described from east to west. In the eastern part, the sedimentary infill is faulted by the known North Eratini, South Eratini and West Channel faults. At the longitude of the Trizonia Island, the seafloor is mainly horizontal and the only fault is the south dipping Trizonia fault. Between the Trizonia Island and the Mornos Delta, the shallower northern part of the gulf shows a diffuse pattern of deformation with faults striking mainly E-W and ESE-WNW. In the southern part of the rift, no fault has been observed between the Psatopyrgos fault bounding the southern side of the Gulf and the Mornos Delta. To the West, between the Mornos Delta and the Rion Straits, three main south dipping, normal and oblique faults have been identified. This NE-SW striking fault system could be part of a local transfer zone linking the Patras and the Corinth Basins, or of the NE-SW right-lateral slip fault system interconnecting the Gulf of Corinth to the Kephalonia transform Fault and the Hellenic subduction. [less ▲]

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See detailProtocols, Standards and Methods for Odour Monitoring by Sensor Technologies
Romain, Anne-Claude ULg

Conference (2013, March 06)

Detailed reference viewed: 11 (7 ULg)
Peer Reviewed
See detailPhysico-chemical properties and photocatalytic activity of calcined P-doped and P/Ag-doped TiO2 xerogels
Bodson, Céline; Pirard, Sophie ULg; Pirard, René ULg et al

Conference (2013, March 05)

Detailed reference viewed: 28 (1 ULg)
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See detailHypertension artérielle résistante : place actuelle de la dénervation rénale dans sa prise en charge
Krzesinski, Jean-Marie ULg

Conference (2013, March 05)

HTA résistante touche 8% de la population hypertendue Nécessité d’une approche méthodique pour débusquer l’erreur dans la prise en charge Importance des médicaments interférant, du gain de poids et de ... [more ▼]

HTA résistante touche 8% de la population hypertendue Nécessité d’une approche méthodique pour débusquer l’erreur dans la prise en charge Importance des médicaments interférant, du gain de poids et de l’alimentation trop salée. Recherche d’un SAHOS Haute dose de diurétique et souvent association avec la spironolactone. Et si cela résiste? …dDénervation rénale? 1% des hypertendus traités! [less ▲]

Detailed reference viewed: 18 (0 ULg)
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See detailLatest results in forecasting and DLR related to Twenties and other projects
Nguyen, Huu-Minh ULg; Doutreloup, Sébastien; Erpicum, Michel ULg et al

Conference (2013, March 05)

The goal of the meeting was to further (see Minutes of the WG3-DLR meeting which took place in Liège, Belgium, November 27th-28th 2012) investigate the “Dynamic Line Rating DLR” potential for the ... [more ▼]

The goal of the meeting was to further (see Minutes of the WG3-DLR meeting which took place in Liège, Belgium, November 27th-28th 2012) investigate the “Dynamic Line Rating DLR” potential for the efficient management of electric grids in view of the increasing share of intermittent renewable energies (wind & solar) and to proceed with the preparation of two posi-tion papers dedicated to 1) DLR forecasting and 2) DLR planning. It was also aimed at finaliz-ing the Terms of Reference for the establishment of a new Working Group within the Cigré B2 Study Committee. [less ▲]

Detailed reference viewed: 40 (14 ULg)
See detailVulnérbilité, robustesse et fragilité en gériatrie
Petermans, Jean ULg

Conference (2013, March 02)

Detailed reference viewed: 22 (2 ULg)
See detailNotre jeunesse déliquante et violente : info ou intox?
Gavray, Claire ULg

Conference (2013, March 01)

Alors que les chiffres montrent qu'on ne remarque pas au niveau global une augmentation de la délinquance et de la violence faites par les jeunes, l'opinion publique a l'impression inverse. Quels est l ... [more ▼]

Alors que les chiffres montrent qu'on ne remarque pas au niveau global une augmentation de la délinquance et de la violence faites par les jeunes, l'opinion publique a l'impression inverse. Quels est l'origne et quels sont les enjeux de cette distorsion ? [less ▲]

Detailed reference viewed: 30 (6 ULg)
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See detailPrise en charge logopedique des patients presbyphoniques
Morsomme, Dominique ULg

Conference (2013, March 01)

Detailed reference viewed: 53 (7 ULg)
See detailThe singing voice evaluation
Larrouy, Pauline ULg; Morsomme, Dominique ULg

Conference (2013, March 01)

Singing is an activity widely shared. In order to determine whether a vocal performance is “in tune” or not, to understand better the causes of poor pitch singing or to judge the quality of a singer ... [more ▼]

Singing is an activity widely shared. In order to determine whether a vocal performance is “in tune” or not, to understand better the causes of poor pitch singing or to judge the quality of a singer, objective tools are needed. Studies leaded for a PhD validate an objective analysis of the vocal accuracy but also observe the effects to take into account for the singing voice evaluation. Experimental as well as artistic and pedagogical perspectives appear from the conclusions of those studies. [less ▲]

Detailed reference viewed: 39 (4 ULg)
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See detailEXAP 15254-5 Extrapolation of height above 4m in partition of metal sandwich panels
Dumont, Fabien ULg; Wellens, Eric ULg

Conference (2013, March)

When testing the fire resistance of metal sandwich panels, the annex B of EN 15254-5 gives rules for the consequently allowed extension of span length. The processing of these rules requires that specific ... [more ▼]

When testing the fire resistance of metal sandwich panels, the annex B of EN 15254-5 gives rules for the consequently allowed extension of span length. The processing of these rules requires that specific measurements are carried out on joints between panels during the test. When a set of tests has been realised on panels of different thicknesses, but no measurement has been carried out on joints during these tests, the relevance of the following processing is analysed : 1. redo only the tests on panels of minimum and maximum thicknesses and carry out the measurement on joints ; 2. deduce the extended height allowed for these tests ; 3. interpolate these results to panels of intermediate thicknesses. [less ▲]

Detailed reference viewed: 36 (1 ULg)
Peer Reviewed
See detail(Bio)-amphiphilic compounds as biohybrid materials: the case of peptidolipids and glycolipids
Razafindralambo, Hary ULg

Conference (2013, March)

(Bio)-hybrid compounds are constituted by at least two distinct classes of component covalently linked within the same structure. Amphiphilic compounds of peptide- and oligosaccharide-lipid groups are ... [more ▼]

(Bio)-hybrid compounds are constituted by at least two distinct classes of component covalently linked within the same structure. Amphiphilic compounds of peptide- and oligosaccharide-lipid groups are among representatives bio-hybrid molecules with increasing interests since each of them contains two entities belonging to important categories of biological molecules like proteins, carbohydrates, and lipids. The strength of such compounds is by far their possibility to exhibit multifunctional properties and activities, specifically developed by each of these three biomolecule classes. In addition, their intermediate size with regard to small and large molecular structures may present certain undeniably advantages, for instance, a lower diffusivity and a greater solubility in aqueous solution compared to small and polymeric surfactants, respectively. In this paper, the case of peptide and carbohydrate-based surfactants containing a linear series of alkyl fats will be presented and discussed regarding to interfacial properties, colloidal stabilities, and biological activities with the perspective of getting more efficient hybrid compounds by rational design approaches. [less ▲]

Detailed reference viewed: 15 (3 ULg)
Peer Reviewed
See detailZnO/PVA Macroscopic Fibers Bearing Anisotropic Photonic Properties
Kinadjian, Natacha ULg; Achard, Marie-France; Julian-Lopez, Beatriz et al

Conference (2013, March)

Composite PVA/ZnO-nanorods fibers, synthesized through co-axial flux extrusion exhibit higher anisotropic photonic properties, both in absorption and emission, as a result of the collective alignment of ... [more ▼]

Composite PVA/ZnO-nanorods fibers, synthesized through co-axial flux extrusion exhibit higher anisotropic photonic properties, both in absorption and emission, as a result of the collective alignment of the ZnO nanorods along the main axis of the PVA fiber. This photonic anisotropy is triggered by a synergistic interaction between the PVA matrix, stretched above the glass transition temperature (Tg), and cooled down under strain. Compared with non-elongated fibers that present an isotropic emission, composite fibers previously submitted to a tensile stress absorb selectively UV emission when the polarized laser beam is parallel to the main axis of the fiber. In addition, their photolumincescence is also anisotropic, with a waveguide behavior along the main axis of the fiber. Mechanical properties of these composite fibers are also drastically improved, compared with pure PVA fibers: the longitudinal Young modulus of these fibers is increased from 2 to 6 GPa upon ZnO addition, a value similar to those already observed for composite fibers, prepared either with carbon nanotubes, or V2O5 macroscopic fibers. [less ▲]

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Peer Reviewed
See detailDelayed diagnosis of cardiomyopathy in a girl treated for asthma bronchiale
MASTOURI, M.; FUDVOYE, Julie ULg; ANTOLE, N. et al

Conference (2013, March)

Detailed reference viewed: 8 (2 ULg)
See detailMicroscale ELISA plate screening of essential oils against European damageable plant pathogens
Parisi, Olivier ULg; Zhiri, Abdesselam; Baudoux, Dominique et al

Conference (2013, March)

Detailed reference viewed: 22 (0 ULg)
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See detailLa CEC en 2013: Etat de l'art
BLAFFART, Francine ULg

Conference (2013, March)

Detailed reference viewed: 15 (0 ULg)
Peer Reviewed
See detailX-ray production cross-sections measurements for high-energy alpha particle beam for Si, Fe and Cu
Dupuis, Thomas; Chene, Grégoire ULg; Marchal, André ULg et al

Conference (2013, March)

Detailed reference viewed: 13 (2 ULg)
Peer Reviewed
See detailTime Controlled Cryogenic Zone Compression (t- CZC) GC-HRMS. Increasing sensitivity to the Attogram Level?
Krumwiede, D; Mehlmann, H; Focant, Jean-François ULg et al

Conference (2013, March)

Detailed reference viewed: 8 (1 ULg)
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Peer Reviewed
See detailPatterns of Management Control for Sustainability
Crutzen, Nathalie ULg; Zvezdov, Dimitar; Schaltegger, Stefan

Conference (2013, March)

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Peer Reviewed
See detailSalmonella infections in young children due to turtle contamination
MATHY, F.; CHIARADIA, F.; MASTOURI, M. et al

Conference (2013, March)

Detailed reference viewed: 12 (0 ULg)
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See detailPolitique de communication d’un service de police modernisé: défis, enjeux et impacts sur l’identification organisationnelle des membres du personnel
Lisein, Olivier ULg; Rondeaux, Giseline ULg

Conference (2013, March)

Dans une société où les notions de marketing, d’image et de réputation sont devenues des impératifs pour toutes les organisations, quels que soient leur forme, leur statut et leurs activités, la parfaite ... [more ▼]

Dans une société où les notions de marketing, d’image et de réputation sont devenues des impératifs pour toutes les organisations, quels que soient leur forme, leur statut et leurs activités, la parfaite maitrise et la gestion efficiente des pratiques de communication externe sont devenues des enjeux fondamentaux. Nombreux sont ainsi les ouvrages qui s’intéressent à cette question et qui regorgent de « bonnes pratiques » à mettre en œuvre en la matière, même si certaines d’entre elles s’apparentent parfois à des raccourcis ne prenant en compte qu’une vision partielle de la problématique et de ses enjeux. Ainsi, la focalisation de plus en plus prononcée sur les impératifs de communication externe tend régulièrement à sous-estimer, voire à oublier deux conséquences clés des pratiques en question au niveau organisationnel : d’une part, les nécessaires articulation et cohérence entre la communication externe et la communication interne ; d’autre part, les « retombées » des actions de communication externe auprès du personnel, notamment en termes d’identification organisationnelle. Cheney et Christensen (2004) partagent cette opinion et plaident pour que chercheurs et praticiens cessent de concevoir la communication institutionnelle au travers de deux champs distincts et séparés : un qui serait tourné vers l’« extérieur » de l’organisation ; un autre focalisé vers l’« intérieur » et le personnel de l’institution. L’évolution de l’environnement sociétal, l’accroissement des politiques de communication ainsi que l’interdépendance qui existe entre l’image externe recherchée par l’organisation et le vécu interne des membres du personnel sont autant d’arguments que mettent en avant ces auteurs pour justifier les nécessaires cohérence et intégration des pratiques de communication. Un consensus semble d’ailleurs émerger depuis lors dans la littérature spécialisée sur la relation qui unit les pratiques de communication externe et interne (D’Almeida et Libaert, 2007 ; Devirieux, 2007), qui doivent désormais être vues comme deux composantes complémentaires d’une stratégie de communication globale et intégrée (Libaert, 2005 ; Boistel, 2007). Ceci est d’autant plus vrai que, comme le soulignent D’Almeida et Libaert (2007, p.13), « les publics auxquels les entreprises s’adressent sont de moins en moins étanches : il y a entre eux un nombre croissant d’interactions et de convergences. Un salarié est un vecteur de l’image de son entreprise, il est aussi un consommateur, un citoyen (…). Les messages développés auprès des différents publics doivent donc être cohérents et non pas contradictoires. La cohérence de la communication est donc une des conditions de sa crédibilité ». Le secteur public en général, et les services de police en particulier, n’échappent pas à cette tendance. Soumis à une pression médiatique de plus en plus forte (Jones, 2007) ainsi qu’à l’obligation de rendre des comptes à leurs stakeholders – autorités de tutelle, pouvoirs politiques, parquets, partenaires, citoyens, etc. – sur leurs activités et sur la « performance » des actions policières (Collier et al., 2004), dans la lignée des impératifs de transparence et d’ouverture des services publics voulus par le New Public Management (Gruening, 2001 ; Butterfield et al., 2005 ; Andersson et Tengblad, 2009), les services de police sont tenus de renforcer et de professionnaliser leur stratégie de communication, laquelle est par ailleurs d’une nature intrinsèquement hétérogène, complexe, et soumise à de multiples exigences (Lemieux, 2005 ; McGovern, 2005 ; Weitzer et Tush, 2005 ; Camerati, 2006 ; Gelders et al., 2007 ; Bradford et al., 2009). Les services de police sont ainsi invités à quitter les logiques de confidentialité et de discrétion qui leur sont souvent reprochées, à s’ouvrir davantage vers l’extérieur et à s’adapter aux impératifs de la société contemporaine en termes de communication. Les défis sont multiples : légitimer leur existence, expliquer leur raison d’être et leur logique d’action, justifier les actions entreprises, renforcer la confiance de la population ou encore favoriser les attitudes et les appréciations positives des citoyens à leur égard. Les bénéfices attendus de telles actions d’ouverture – notamment envers la presse et les médias – sont exposés dans la littérature spécialisée sur la communication policière (voir entre autres Motschall et Cao, 2002 ; Karchmer, 2002 ; Leishman et Mason, 2003 ; Jones, 2007), qui évoque entre autres une information et une couverture plus positives de la police et de ses actions, ce qui assurera à terme une meilleure image de celle-ci auprès de la population ainsi qu’une plus grande facilité à faire adhérer les citoyens à la réalisation des buts poursuivis par les services de police (Weitzer et Tuch, 2005 ; Bradford et al., 2009). Une stratégie de communication externe pertinente ne serait en outre pas sans conséquence au niveau interne. En effet, si la communication à destination des membres du personnel constitue un excellent moyen de faciliter l’identification organisationnelle de ceux-ci (Chreim, 2001) et d’ainsi favoriser une convergence entre les objectifs individuels et les buts organisationnels, la perception qu’a l’environnement extérieur du prestige de la fonction et de la légitimité de l’institution semble également jouer un rôle important en la matière. Mignonac et al. (2006) mettent ainsi en évidence les effets interactifs du prestige externe perçu et du besoin d’identification organisationnelle. C’est également le propos de Smidts et al. (2001), qui identifient une corrélation positive entre la communication interne, le prestige externe perçu par les membres de l’organisation et leur degré d’identification organisationnelle. Ce concept de « Perceived External Prestige », que Dutton et al. (1994) appellent également l’image externe construite, et qui peut être défini comme la perception des employés sur la manière dont le monde extérieur voit leur organisation (Bartels et al., 2007) ou comme « how an employee thinks outsiders view his or her organization » (Smidts et al., 2001, p.1052), est vu comme une donnée explicative de l’attachement que tout un chacun peut avoir à l’organisation qui l’emploie. Cette question a notamment fait l’objet de recherches ciblées au niveau des services de police et de l’identification des policiers à leur institution. Yim et Schafer (2009), par exemple, étudient la façon dont des policiers américains perçoivent l’image qu’ils donnent d’eux à la population et les retombées qui en résultent sur leur satisfaction au travail et sur leur attachement à l’institution policière. Partant des travaux antérieurs de Cao et al. (1998), de Fosam et al. (1998) et de Lim et al. (2000), ils posent l’hypothèse que « officers’perceived job image, that is, of how they think they are seen by the public, affects work-related attitudes, such as job satisfaction » (Yim et Schafer, 2009, p.19). Et ces auteurs de postuler par extension que ces résultats influent également sur l’efficacité des policiers et des services de police dans les missions qui leur sont attribuées. Les résultats de ces recherches laissent par conséquent sous-entendre l’importance du développement de stratégies de communication adaptées, tant leurs effets sont susceptibles de se faire ressentir directement – notamment au niveau externe, sur l’image et la légitimité de l’institution policière – mais aussi indirectement – en interne, à travers le processus d’identification organisationnelle des membres du personnel (Williams, 2002 ; Yim et Schafer, 2009). Cette approche ne donnera toutefois les effets attendus que si elle est développée et mise en œuvre en respectant les impératifs de cohérence susmentionnés. Des incohérences entre les actions de communication interne et externe, des incohérences entre les images projetées vers l’extérieur et les réalités vécues au quotidien en interne ou encore des incohérences entre les actions de communication et les pratiques effectives de management du personnel ne pourront en effet que se traduire par un manque de crédibilité des messages véhiculés et risquer d’engendrer un désabusement ou une perte de motivation de la part des salariés dans l’exercice de leur fonction (Dutton et Dukerich, 1991 ; Dutton et al., 1994 ; Smidts et al., 2001 ; Bartels et al., 2007). Tel est le contexte général de notre proposition de communication, où nous cherchons plus particulièrement à mettre ces tendances à l’épreuve des faits. Pour ce faire, nous nous appuyons sur les résultats d’une étude empirique qui nous a conduits à nous immerger pendant plus d’un an dans les services de la police fédérale belge et à y analyser les pratiques de communication à l’œuvre. Cette recherche était articulée autour de quatre axes de travail complémentaires : 1) une analyse de la littérature sur les pratiques de communication des services de police, leurs enjeux, leurs difficultés, et les solutions émergentes en la matière ; 2) une analyse de la vision qu’ont les membres de la police fédérale des pratiques de communication de l’institution (étude quantitative menée auprès d’un échantillon de 2000 personnes – 790 questionnaires valides reçus, soit un taux de réponse de 39,5%) ; 3) une analyse des pratiques de communication externe, appréhendée à partir de la perception qu’en ont trois types de partenaires usuels des services de police : les autorités de tutelle et les pouvoirs publics, les autorités judiciaires ainsi que les médias et les journalistes de presse (étude qualitative menée sous la forme d’entretiens semi-directifs auprès de 10 représentants d’autorités institutionnelles et 17 journalistes de presse, tous médias confondus) ; 4) une analyse transversale de nos résultats nous ayant conduits à l’élaboration de différentes recommandations en matière de communication, adaptées selon différents facteurs contextuels et intégrées dans une approche managériale réfléchie en ce sens. Ces résultats, issus d’une double démarche de recherche qualitative et quantitative, seront mobilisés dans le cadre de notre contribution pour souligner les impératifs de cohérence et d’articulation des pratiques de communication interne et externe. Au travers de l’analyse croisée de la perception qu’ont les différentes parties prenantes internes et externes de la police fédérale des pratiques de communication de l’institution, nous mettrons en évidence les distorsions auxquelles les incohérences relevées conduisent et les impacts que ce défaut d’articulation communication interne – communication externe présente en termes de crédibilité des messages, d’identification organisationnelle et de gestion du personnel. Données empiriques à l’appui, nous mettrons en exergue l’importance de développer une politique de communication qui soit intégrée et réfléchie de manière globale. Nous soulignerons également le nécessaire équilibre à trouver dans les pratiques de communication, afin d’éviter de porter l’accent sur l’une des deux sphères (interne ou externe) au détriment de l’autre. Un déséquilibre dans les pratiques de communication et/ou une articulation insuffisante entre les deux sphères conduira en effet vraisemblablement l’organisation à différentes formes de dysfonctionnements, que nous qualifions respectivement au travers des vocables de « narcissisme », « hyper-marketing » et « cacophonie ». Nous dégagerons finalement sur cette base quelques principes cruciaux en matière de communication institutionnelle et de gestion des ressources humaines, nous amenant à proposer des pistes de réflexion tournées vers la mise en œuvre d’une stratégie de communication intégrée et polyphonique. [less ▲]

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See detailCardiac malformations in neonates born from mothers with gestational diabetes
ANTOLE, N.; JACQUEMART, C.; GKIOUGKI, Evangelia ULg et al

Conference (2013, March)

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See detailControlled and automatic memory retrieval in Alzheimer's disease
Bastin, Christine ULg

Conference (2013, February 28)

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See detailStochastic Dimension Reduction of Multi Physics Systems through Measure Transformation
Phipps, Eric; Constantine, Paul; Red-Horse, John et al

Conference (2013, February 26)

Uncertainty quantification of multiphysics systems represents numerous mathematical and computational challenges. Indeed, uncertainties that arise in each physics in a fully coupled system must be ... [more ▼]

Uncertainty quantification of multiphysics systems represents numerous mathematical and computational challenges. Indeed, uncertainties that arise in each physics in a fully coupled system must be captured throughout the whole system, the so-called curse of dimensionality. We present techniques for mitigating the curse of dimensionality in network-coupled multiphysics systems by using the structure of the network to transform uncertainty representations as they pass between components. Examples from the simulation of nuclear power plants will be discussed. [less ▲]

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See detailLes problèmes cutanés liés aux médicaments
GADISSEUR, Romy ULg

Conference (2013, February 25)

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See detailLes candidats d’ouverture sur les listes électorales au scrutin communal de 2012
Dodeigne, Jérémy ULg

Conference (2013, February 25)

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See detailLe tutorat: pour un accompagnement réflexif et interactif centré sur l'étudiant / Développer des compétences de tuteur dans un modèle socioconstructiviste et interactif
Dury, Cécile ULg

Conference (2013, February 22)

Public: 300 personnes de tout secteur d'activité des établissements sanitaires et sociaux Présentation de deux interventions ayant pour objectifs: - Une présentation interactive (60')des grands concepts ... [more ▼]

Public: 300 personnes de tout secteur d'activité des établissements sanitaires et sociaux Présentation de deux interventions ayant pour objectifs: - Une présentation interactive (60')des grands concepts liés à l'agir avec compétences et à l'accompagnement au développement de compétences dans un modèle socioconstructiviste et interactif - une présentation pour faire émerger les "nouvelles" compétences du tuteur en stage. A partir d'une vidéo pour amener à l'analyse de la pratique, la pratique réflexive, l'entretien et le questionnement. Un état des lieux au niveau européen est présenté et les perspectives associées à cette problématique sont discutées. [less ▲]

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See detailDébats européens sur les formes de la vie marine au Siècle des Lumières
Vandersmissen, Jan ULg

Conference (2013, February 22)

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See detailAllergie alimentaire de l'enfant
GADISSEUR, Romy ULg

Conference (2013, February 21)

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See detailFemina chez Sénèque : apports et limites de la statistique textuelle
Vandersmissen, Marc ULg

Conference (2013, February 21)

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See detailVideo multitracking and study of the collective behaviour in tadpoles
Delcourt, Johann ULg

Conference (2013, February 21)

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See detailParticipation à la Table ronde autour du livre de Denis Seron Ce que voir veut dire
Gyemant, Maria ULg

Conference (2013, February 20)

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See detailNouveautés dans le diagnostic des allergies
GADISSEUR, Romy ULg

Conference (2013, February 19)

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See detailMarvel Studios : du crossover au cross-média. Analyse d’un couplage entre comics et cinéma
Tomasovic, Dick ULg

Conference (2013, February 15)

La firme Marvel, célèbre maison d’édition de comics devenue également maison de production audiovisuelle, a développé durant les années 2000 une stratégie originale d’adaptation cinématographique des ... [more ▼]

La firme Marvel, célèbre maison d’édition de comics devenue également maison de production audiovisuelle, a développé durant les années 2000 une stratégie originale d’adaptation cinématographique des œuvres imprimées qui marque par son caractère hybride et son intermédialité. D’une part, ces films empruntent nombre de caractéristiques propres à l’écriture des comics pour renouveler la poétique des blockbusters. D’autre part, ces adaptations filmiques influent ensuite sur l’esthétique des comics, bouleversant ainsi la hiérarchie habituelle entre œuvres sources et œuvres adaptées. La question de l’adaptation de ces comics superhéroiques s’avère d’autant plus complexe que la bande dessinée et le cinéma ne sont pas les seuls médias ou les seules pratiques en jeu (animation, industrie du jouet et jeux vidéos doivent être également considérés). Pour tenter de cerner les enjeux de l’actuelle stratégie des adaptations Marvel, cet article tente d’appréhender le film de superhéros en tant que genre à part entière (renouvellement des codes du film d’action, des modes de production et de convergences industriels) en s’attachant, notamment, à un film emblématique de cette production : The Avengers (Joss Whedon, 2012). [less ▲]

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See detailRandom generation of dichotomous CAT response patterns with the R package catR
Magis, David ULg

Conference (2013, February 14)

The purpose of this talk is to briefly introduce the R package catR that permits random generation of response patterns under a computerized adaptive testing (CAT) framework. First, an outline of the CAT ... [more ▼]

The purpose of this talk is to briefly introduce the R package catR that permits random generation of response patterns under a computerized adaptive testing (CAT) framework. First, an outline of the CAT is proposed, with emphasis on the main concepts (item bank, ability estimation, next item selection, stopping rule, item exposure and content balancing). Then, the performance of the catR package is described by making connections between the general CAT framework and the functionalities of the R functions within catR. An example will be displayed, either as a “live” demonstration of catR or as part of the talk. Potential extensions of catR will also be discussed. The catR package was jointly developed by Gilles Raîche (Université du Québec à Montréal, Canada). [less ▲]

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See detailAn adaptive large neighborhood search for a vehicle routing problem with multiple trips and driver shifts
Arda, Yasemin ULg; Crama, Yves ULg; François, Véronique ULg

Conference (2013, February 13)

This study analyzes a rich vehicle routing problem with multiple trips and driver shifts. The considered problem features are inspired from the practical case of a Belgian distribution company. Along with ... [more ▼]

This study analyzes a rich vehicle routing problem with multiple trips and driver shifts. The considered problem features are inspired from the practical case of a Belgian distribution company. Along with the multi-trip component, characteristics of this particular problem include time windows, pickup and delivery customers, and site-vehicle dependencies. Internal and external fleets are considered with different cost structures and driver shifts constraints. An adpative large neighborhood search is used to treat the problem. [less ▲]

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See detailDiálogo entre un poeta medieval y una obra aurisecular: Antón de Montoro a partir de "La Lozana Andaluza" de Francisco Delicado
François, Jéromine ULg

Conference (2013, February 13)

Entre los múltiples juegos intertextuales del Retrato de la Lozana andaluza, obra del presbítero Francisco Delicado publicada en 1528 en Venecia, están bien representados los autores del siglo XV y sus ... [more ▼]

Entre los múltiples juegos intertextuales del Retrato de la Lozana andaluza, obra del presbítero Francisco Delicado publicada en 1528 en Venecia, están bien representados los autores del siglo XV y sus obras, a los que se refiere mediante sencillas menciones, citas o aun a través de una reescritura. Así, tanto los textos de Fernando del Pulgar como La Cárcel de amor de Diego de San Pedro o La Celestina de Fernando de Rojas constituyen parte de los hipotextos que pueblan el mundo variopinto de la cortesana andaluza que nos retrata Delicado. Ahora bien el poeta cancioneril converso Antón de Montoro (¿1404-1477?) sobresale dentro de esta pléyade, aunque no por la frecuencia de las alusiones a esta figura, pues éstas se reducen a una única mención del poeta mediante su apodo « El Ropero », sino más bien por la peculiaridad del contexto en el que se inserta esta mención, entre alusiones a Séneca, Lucano y Marcial. Nuestra comunicación pretende demostrar que esta presencia del cordobés cuatrocentista caracterizado por su agudeza verbal entre los mamotretos del siglo XVI no se reduce a una sencilla intrusión entre autores clásicos en son de burla. Correrá a nuestro cargo determinar en qué medida ciertas afinidades, de índole estética y temática, que comparten Montoro y Delicado podrían explicar la mención de aquél por éste en tan halagador entorno textual. Ahora bien, destacar los principales puntos de contacto entre La Lozana del autor aurisecular y la figura del Ropero de hecho nos permitirá perfilar la peculiaridad del estatuto social de Antón de Montoro y de su quehacer poético. [less ▲]

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See detailWhat is the potential increase in the heart graft pool by cardiac donation after circulatory death?
Noterdaeme, Timothée; HANS, Marie-France ULg; NELLESSEN, Eric ULg et al

Conference (2013, February 09)

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See detailViruses and Cancer
Barez, Pierre-Yves ULg; Carpentier, Alexandre ULg; Willems, Luc ULg

Conference (2013, February 08)

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See detail(Re)productive Traditions, Cultural Transmission and Egyptology
Gillen, Todd Jonathan ULg

Conference (2013, February 08)

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See detailOn-line flow cytometry profiling of Escherichia coli stress response
Brognaux, Alison ULg; Han, Shanshan; Sorensen, Soren et al

Conference (2013, February 08)

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See detailLes infections respiratoires: méthodes de diagnostic au laboratoire.
HUYNEN, Pascale ULg

Conference (2013, February 08)

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See detailA general lot-sizing problem in a closed-loop supply chain with returns
Amand, Guillaume ULg; Arda, Yasemin ULg

Conference (2013, February 08)

We consider a stochastic version of the multi-product multi-level capacitated lotsizing and scheduling problem with sequence-dependent setups. A bottler needs to determine its production schedule over a ... [more ▼]

We consider a stochastic version of the multi-product multi-level capacitated lotsizing and scheduling problem with sequence-dependent setups. A bottler needs to determine its production schedule over a finite horizon in order to satisfy a deterministic demand. The raw materials are supplied through two different sources: uncapacitated reserves of new bottles and the uncertain returns of used bottles. We present results for the single-item case. [less ▲]

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See detailFunctional screening of a metagenomic library from algal biofilms
Martin, Marjolaine ULg

Conference (2013, February 08)

Macroalgae, and particularly their lignin-free polysaccharides, are increasingly used for their gelling and therapeutic properties and for the production of biofuels and renewable chemical compounds. To ... [more ▼]

Macroalgae, and particularly their lignin-free polysaccharides, are increasingly used for their gelling and therapeutic properties and for the production of biofuels and renewable chemical compounds. To extract, hydrolyze and purify this biomass, algae hydrolyzing enzymes are needed. Our work aims to identify and characterize algal biomass hydrolyzing enzymes expressed by microorganisms living on the surface of algae, by functional metagenomics. Therefore, a microbial DNA extraction method was developed to isolate the gDNA from the microorganisms of the brown algae Ascophyllum nodosum and a metagenomic library was constructed in Escherichia coli. The library was screened for diverse enzymatic activities (esterases, xylanases, cellulases, α-amylases, arabinanases, caseinases and β-glucosidases) on agar plates with specific enzymes substrates. Several new microbial enzymes (esterases, β-glucosidases, α-amylases and cellulases) were identified revealing the wealth of our library. Furthermore, those enzymes had less than 50% sequence identity with known protein sequences; meaning that our approach allows to identify new microbial enzymes expressed by uncultured microorganisms. Plate tests for medium-throughput screening of specific enzymes hydrolyzing algal polysaccharides (agarases, carrageenases and alginate lyases) are currently being developed. Our approach will probably allow us to identify new families of those ill-known enzymes, with particular enzymatic activities. [less ▲]

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See detailTwo-stage stochastic integer programming models for strategic disaster preparedness
Döyen, Alper ULg; Aras, Necati; Arda, Yasemin ULg

Conference (2013, February 08)

We are interested in two distinct disaster management models which are modeled by two-stage stochastic integer programming. While the first model solution provides optimal post-disaster response related ... [more ▼]

We are interested in two distinct disaster management models which are modeled by two-stage stochastic integer programming. While the first model solution provides optimal post-disaster response related decisions and pre-disaster retrofitting decisions to minimize the total cost, in addition to the first model, the second model considers the recovery actions and the time of earthquake occurrence. In the models, retrofitting decisions are given for both buildings and bridges under a limited budget. Effective and efficient solution methods are proposed in the study. [less ▲]

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See detailGeochemistry and XRD to differentiate oolitic ironstone geological levels from Germany, Belgium and France and application to the archaeological artefacts
Salomon, Hélène ULg; Goemaere, Eric; Mathis, François ULg et al

Conference (2013, February 07)

Particle Induced X-ray Emission (PIXE) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) have largely demonstrated their capability to analyse trace elements for determining the ... [more ▼]

Particle Induced X-ray Emission (PIXE) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) have largely demonstrated their capability to analyse trace elements for determining the origin of archaeological materials. Trace elements can in fact be used as fingerprint of the geological origin and thus contribute to provenance investigations. This point is an important question for prehistoric studies, as it provides information on mobility, exchanges and interaction between groups of population. We present experimental PIXE configurations which allow to investigate prehistoric oolithic haematite, at the ppm level without any preparation or sampling. We compare the data obtained with two devices, namely AGLAE (Accélérateur Grand Louvre d'Analyse Elémentaire) in Paris and the cyclotron in the Centre Européen d'archéométrie in Liège and we determined the uncertainties of measures. The geological samples were compared in order to estimate de geochemical variability in stratigraphy and in width of oolithic haematite from the Ordovician in Caen region (France) and from the Devonian in Hesbaye (Belgium). These data were also compared to oolithic haematite used during Mesolithic and LBK (Early Neolithic) in both the regions. Furthermore we looked for mineralogical fingerprints by X-Ray Diffraction on disoriented powders. The mineralogical composition is ubiquitous and no discrimination between the stratigraphical layers was possible. [less ▲]

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See detailPetrographical differentiation between Palaeozoic oolitic ironstones from France, Belgium and Germany and application to the provenance study of archaeological artefacts – preliminary results
Dreesen, Roland; Savary, Xavier; Goemaere, Eric et al

Conference (2013, February 07)

Samples of Palaeozoic oolitic ironstone beds susceptible of having being used as raw materials for Neolithic red ochres, have been petrographically investigated. The preliminary results of this first ... [more ▼]

Samples of Palaeozoic oolitic ironstone beds susceptible of having being used as raw materials for Neolithic red ochres, have been petrographically investigated. The preliminary results of this first comparative analysis are quite encouraging: microfacies differences have been observed between Ordovician oolitic ironstones from Normandy (France), late Upper Devonian oolitic ironstones from Belgium and uppermost Lower Devonian to lowermost Middle-Devonian (Emsian-Eifelian) oolitic ironstones from the Eifel area (Germany). Petrographical differentiation is based upon contrasting grain size, mineralogy (hematite/chlorite ratio) and typology of the ferruginous ooids, besides differences in mineralogy, diagenetic history and lithologic nature of the host sediments. Most conspicuous are differences in ferruginous ooid typology, including “true” concentric ooids, superficial ooids, algal oncoids and pseudo-ooids (ferruginized cortoids and rounded bioclasts). “Flax seed” or Clinton-type iron ores (rich in flattened ooids) and “fossil iron ores” (essentially composed of ferruginized bioclasts) can be identified as well as transitional or mixed types. Homogenous and well-sorted, often flattened and fine-grained ferruginous “true” ooids (flax seed ore) with alternating hematite and chlorite cortices in a sideritic- chloritic or fine siliciclastic matrix, are characteristic for the Ordovician (Llanvirn) oolitic ironstones of Normandy (basal part of the Urville Shales). Locally, weathered levels exist, enclosing limonitic (goethitic) crusts. Medium-sorted, fine-to coarse- grained ferruginous hematitic pseudo-ooids (ferruginized bioclasts) in a bioclastic limestone matrix (fossil ore) characterize the Lower-Middle Devonian boundary oolitic ironstone beds (Heisdorf and Lauch Formations, Eifel Synclines). Finally, well- to medium-sorted heterogenous, fine- to medium-grained, pure or mixed flax seed- and fossil ore-type hematitic oolitic ironstones in siliclastic and/ore carbonate matrices, characterize the Belgian Latest Upper Devonian (Famennian) ironstone deposits (Hodimont Formation, Famenne Shales Group). Several stratigraphic levels do exist within the Lower Famennian and basal part of the Upper Famennian in the Namur, Dinant and Vesdre Synclinoria, but the lowermost Famennian one is the only level that has been mined. Within some of the younger Famennian oolitic ironstone levels, proximal and distal facies can be distinguished on the basis of microfacies differences and mineralogy of the ferruginous pseudo-ooids. Only the proximal hematitic facies of the lowest stratigraphical oolitic ironstone level (level I) is supposed to have been used in prehistoric times for the manufacturing of ochre. Diagenetic sideritization and dolomitization, particle deformation as well as sulphide mineralizations, affect most of the studied oolitic ironstones. However, the intensity of these mineralizations varies strongly (even within the same deposit) and depends on local tectonics. A distinction can be made between the Emsian-Eifelian and Famennian fossil iron ores, based on the nature of the bioclasts and other ferruginzed components). Eifelian oolitic ironstones contain ferruginized crinoids, bryozoans, trilobites, brachiopods, goniatites besides ferruginized siliciclastic intraclasts, whereas the Famennian ones are dominated by ferruginous ooids and algal oncoids, mixed with ferruginized bioclasts including crinoids, bryozoans, brachiopods, ostracods, algae and incertae sedis, and locally intraclasts (ferruginized stromatolitic crusts). Distal facies contain slightly Fe-impregnated bioclasts only such as crinoid ossicles and display a higher chlorite/hematite ratio. Thin sections have been made in archeological objects (red ochre), allowing a first comparative petrographical analysis indicating their probable geological and geographical provenance. References Ph. Joseph, 1982. Le minerai de fer oolithique Ordovicien du Massif Armoricain: sédimentologie et paléogéographie. Thèse présentée à l’Ecole Nationale Supérieure des Mines de Paris. 325 p. R. Dreesen, 1989. Oolitic ironstones as event-stratigraphical marker beds within the Upper Devonian of the Ardenno-Rhenish Massif, in: Young, T.P. & Taylor, W.E.G. (eds), Phanerozoic Ironstones. Geological Society Special Publications, n°46, pp. 65-78 Rath, S., 2003. Die Erforschungsgeschichtede Eifel-Geologie. Ph.D. Dissertation, Rheinisch- Westfälische Technische Hochschule Aachen, 239 p. [less ▲]

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See detailGeological record and sedimentology of the Palaeozoic oolitic ironstone deposits in Western Europe. Spatial relationships with the Linienbandkeramik settlements (LBK) in Belgium.
Goemaere, Eric; Dreesen, Roland; Katsch, A. et al

Conference (2013, February 07)

Mined since prehistoric times, oolitic ironstones (OIS) were a very important world source of iron from 1850 to 1945: hereafter they have been progressively replaced by the Precambrian Banded Iron ... [more ▼]

Mined since prehistoric times, oolitic ironstones (OIS) were a very important world source of iron from 1850 to 1945: hereafter they have been progressively replaced by the Precambrian Banded Iron- Formations (BIF). OIS are iron-rich sedimentary rocks bearing ferruginous ooids. They consist of at least 15% iron. In Western Europe, their overall depositional environment is that of a shallow shelf, most often located close to the transition from non-marine to marine environments. Their main age range is concentrated within the Ordovician through Devonian and the Jurassic through Paleogene. Proterozoic occurrences are known but these occur outside Europe. The host rocks of the ironstones are predominantly clastic, whereas the host sediment of the ferruginous ooids can be either clastic or carbonate or both. The OIS occur at the top of coarsening and shoaling upward cycles. They represent condensed deposits and transgressive system tracts. Numerous oolitic ironstone deposits are interpreted as tempestites or as intertidal deposits. It is generally agreed that ferruginous ooids formed in shallow marine water conditions, near the water-sediment interface, with repeated reworking of the sediment. Such an environment implies oxidizing conditions, the sedimentary iron being in the ferric state. The exact source of the iron is still a matter of discussion and speculation, just as the primary or secondary origin of the ferruginous ooids. Besides hematite (or goethite), also siderite, Fe-dolomite and berthierine/chamosite are present in the OIS as iron-bearing minerals. Due to weathering processes the carbonate matrix is often removed, the iron is released and oxidized, whereas the ferrous silicates are converted into ferric oxides or ferric hydroxides. Many old mining activities are based on occurrences of this weathered ore. The latter material has also strong staining properties. 1. Germany OIS are outcropping in the Eifel area. The latter is part of the Ardenno-Rhenish Massif and lies in the eastern extension of the Neufchateau Synclinorium, south of the Ardenne Anticlinorium (enclosing the Cambro-Ordovician Stavelot-Venn inlier). The general structure of the Eifel corresponds to an intensively folded and faulted synclinorium In the center of this synclinorium, outcrops of OIS occur on both flanks of successive synclines that are individually named (from the north to the south): the Sötenicher Mulde, the Blankenheimer Mulde the Rohrer Mulde, the Dollendorfer Mulde, the Ahrdorfer Mulde and the Hillesheimer Mulde. Two important stratigraphic levels with IOS are known and they coincide more or less with the Lower-Middle Devonian boundary (Uppermost Emsian- Lowermost Eifelian). These OIS represent excellent marker beds for geological mapping. 2. The Netherlands There is no outcrop of OIS in this country. 3. Belgium Oolitic iron ores were formed during different periods in Belgium: the Lochkovian (Lower Devonian, Dinant Synclinorium, restricted to the Belgian-French border), the Givetian (Middle Devonian, Dinant Synclinorium), the Frasnian (Upper Devonian, Dinant Synclinorium), the Famennian (Upper Devonian, Namur S., Dinant S. & Vesdre S.) and the Toarcian-Aalenian (Jurassic, Lorraine area, Paris Basin – called “minette ore”). The most important OIS level is the Lower Famennian one. It has been intensively mined until the middle of the 20th century, essentially in the Namur Synclinorium, between the cities of Namur and Huy. In this area, its important thickness (until 1.85m) and the number of layers triggered the development of an important economic activity. Outcrops were restricted to the tributaries of the Meuse River. The Famennian oolitic ironstone facies change from north to south by a gradual decrease in the number of layers, in their thickness, grain size, ooid concentration, clast size and iron content. They represent also excellent lithostratigraphical marker beds. The clay-dolomitic matrix is being progressively replaced by a calcitic cement. The other Devonian OIS levels are not of great economic importance, they were only mined locally, to supply smith’s working places. Due to surface mining, outcrops are now very rare, and often indicated by a light depression in the topography only. 4. Grand-Duchy of Luxembourg OIS are restricted to the Jurassic (Aalenian-Lower Bajocian) in the NW part of the Paris Basin. This essentially goethitic ore (“minette”) was intensively mined in the three adjacent country borders area (FR-BE-LU). No OIS levels in the Lower Devonian are outcropping in the northern part of the Grand Duchy. 5. France Numerous OIS layers are known in France at several stratigraphical levels, but a lot of them cannot be considered as a real ore. Paleozoic OIS belonging to the Armorican Massif were mined in the Normandy area (Urville Fm, Llanvirn, Middle Ordovician) and in the Bretagne area (Arenig, Lower Ordovician). In Normandy, OIS do outcrop inside several synclines (e.g. May and Urville Sy.), as one thick composite layer.  The spatial relationships of the different oolitic ironstone levels with the Linienbandkeramik settlements (LBK) in the studied area, will be presented. [less ▲]

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See detailOptimization model for empty container repositioning
Salmon, Frédéric ULg; Limbourg, Sabine ULg

Conference (2013, February 07)

Empty container management is a transportation issue relating to the imbalance of container demand and supply in various parts of the world. Hence the necessity for shippers to move empty containers to ... [more ▼]

Empty container management is a transportation issue relating to the imbalance of container demand and supply in various parts of the world. Hence the necessity for shippers to move empty containers to supply areas. The purpose of this research is to develop a decision support tool applying to intermodal freight transport. This project aims at minimizing the overall cost of empty container management in the hinterlands of the ports of Antwerp and Rotterdam. The proposed model is a two-stage stochastic network model which takes account of transit time between ports and terminals, shipping cost, the carrying capacity of the various modes of transport, the stochastic demand and supply of each terminal and port as well as other parameters such as substitution or holding costs. In addition, the proposed model considers the possibility of intermodality with road transportation. Along with the optimal solution, our experimental data should yield an understanding of the impact of costs on the repartition of ows and inventories [less ▲]

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See detailRenewed in Translation: The Persea Tree from Egypt to the Greeks
Caneva, Stefano ULg

Conference (2013, February 07)

The paper investigates continuities and ruptures in the meaning and use of the sacred persea tree from Pharaonic to Graeco-Roman tradition, by focusing on a period from III cent. BC to late Antiquity.

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See detailIntermodal network design for freight transportation in Belgium - location of rail/road and road/inland waterway terminals
Mostert, Martine ULg; Limbourg, Sabine ULg

Conference (2013, February 07)

In the recent years, growing concerns about environmental, societal and economic issues have emerged in the society. The improvement and the expansion of the multimodal network is one way of solving those ... [more ▼]

In the recent years, growing concerns about environmental, societal and economic issues have emerged in the society. The improvement and the expansion of the multimodal network is one way of solving those kinds of problems. The objective of this work is therefore the integration of inland waterway, rail and road transport into the linear modeling of intermodal terminal location problems, based on transportation costs functions which are nonlinear with the distance traveled. The model should also take into account the capacity constraints linked to the different modes of transport. [less ▲]

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See detailAutomatic Aircraft Cargo Load Planning with Pick-up and Delivery
Lurkin, Virginie ULg; Schyns, Michael ULg

Conference (2013, February 07)

This research aims to develop a new mixed integer linear program to solve the containers assignment problem when pickup and deliveries are considered. Given a pool of ULDs and an aircraft with multiple ... [more ▼]

This research aims to develop a new mixed integer linear program to solve the containers assignment problem when pickup and deliveries are considered. Given a pool of ULDs and an aircraft with multiple destinations, we want to obtain a loading plan determining at which positions the ULDs must be assigned in order to minimize simultaneous the quantity of fuel consumed and the number of re-handles. The loading plan should also ensure a number of structural, safety and manoeuvrability constraints. The model has been tested on real instances and provides encouraging results. [less ▲]

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See detail(Re)productive Tradition in Ancient Egyptian
Winand, Jean ULg

Conference (2013, February 06)

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See detailLes problèmes cutanés liés aux médicaments
GADISSEUR, Romy ULg

Conference (2013, February 05)

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See detailComment les circuits « alternatifs » de consommation alimentaire s’intègrent-ils dans une dynamique durable, incluant dimensions sociales, économiques et environnementales? Le cas des GAC et du Commerce équitable.
Thys, Séverine ULg

Conference (2013, February 01)

Cette contribution interroge l’existence d’un référentiel critique et argumentatif commun à des initiatives d’Economie Sociale. En utilisant l’appareillage théorique de la « sociologie des épreuves », les ... [more ▼]

Cette contribution interroge l’existence d’un référentiel critique et argumentatif commun à des initiatives d’Economie Sociale. En utilisant l’appareillage théorique de la « sociologie des épreuves », les propos de GACEURS et de bénévoles/salariés du commerce équitable seront analysés afin de voir si le concept de Développement Durable porte en lui un projet sociétal, un référentiel fédérateur, apte à mobiliser des consom’acteurs autour de revendications partagées. [less ▲]

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See detailMéthodes Booléennes en recherche opérationnelle
Crama, Yves ULg

Conference (2013, February)

Le titre de cette conférence est celui d'une monographie cosignée par Peter L. Hammer et Sergiu Rudeanu, et dont la publication en 1968 a inspiré un nombre important de travaux de recherche. Très ... [more ▼]

Le titre de cette conférence est celui d'une monographie cosignée par Peter L. Hammer et Sergiu Rudeanu, et dont la publication en 1968 a inspiré un nombre important de travaux de recherche. Très récemment, le regretté Peter Hammer et moi-même avons publié deux lointaines mises à jour de cet ouvrage classique: une monographie intitulée Boolean Functions: Theory, Algorithms, and Applications (700 pages, Cambridge University Press, 2011) et une collection de surveys sur le thème Boolean Models and Methods in Mathematics, Computer Science and Engineering (780 pages, Cambridge University Press, 2010). La taille de ces deux volumes et de leurs sections bibliographiques sont les témoins de la vitalité de ce domaine de recherche et de son développement impressionnant. Les fonctions booléennes comptent en effet parmi les objets les plus fondamentaux étudiés en mathématiques. Elles interviennent dans de nombreux modèles utilisés en recherche opérationnelle, informatique, intelligence artificielle, économie, ingénierie, cryptographie, biologie et autres domaines d'application. Dans cet exposé, nous proposons un bref aperçu de quelques modèles booléens fondamentaux et de leurs applications. [less ▲]

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See detailPostnatal growth assessment and charts for premature infants.
SENTERRE, Thibault ULg

Conference (2013, February)

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