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See detailNadeau
Lorent, Fanny ULiege

in Coste, Claude (Ed.) Dictionnaire Roland Barthes (in press)

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See detailRécit
Lorent, Fanny ULiege; Chassain, Adrien

in Coste, Claude (Ed.) Dictionnaire Roland Barthes (in press)

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See detailHarzé - La Gleize. Carte géologique de la Wallonie. Notice explicative
Lamberty, Pauline ULiege; Marion, Jean-Marc ULiege; Mottequin, Bernard et al

Book published by SPW/Editions (in press)

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced, since the first edition published in 1899 (Gustave Dewalque) at ... [more ▼]

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced, since the first edition published in 1899 (Gustave Dewalque) at the scale of 1/40.000 by the "Commission Géologique de Belgique" and the second one, published in 1959 (Asselberghs & Geukens) at the scale of 1/40.000 by the Geological Survey of Belgium. [less ▲]

Detailed reference viewed: 61 (38 ULiège)
See detailDynamic simulation of a post-combustion CO2 capture pilot with assessment of solvent degradation
Benkoussas, Hana ULiege; Léonard, Grégoire ULiege; Ioana Burca, Madalina et al

Conference (in press)

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See detailA Markov-switching Generalized additive model for compound Poisson processes, with applications to operational losses models
Hambuckers, julien ULiege; Kneib, Thomas; Langrock, Roland et al

in Quantitative Finance (in press)

This paper is concerned with modeling the behavior of random sums over time. Such models are particularly useful to describe the dynamics of operational losses, and to correctly estimate tail-related risk ... [more ▼]

This paper is concerned with modeling the behavior of random sums over time. Such models are particularly useful to describe the dynamics of operational losses, and to correctly estimate tail-related risk indicators. However, time-varying dependence structures make it a difficult task. To tackle these issues, we formulate a new Markov-switching generalized additive compound process combining Poisson and generalized Pareto distributions. This flexible model takes into account two important features: on the one hand, we allow all parameters of the compound loss distribution to depend on economic covariates in a flexible way. On the other hand, we allow this dependence to vary over time, via a hidden state process. A simulation study indicates that, even in the case of a short time series, this model is easily and well estimated with a standard maximum likelihood procedure. Relying on this approach, we analyze a novel dataset of 819 losses resulting from frauds at the Italian bank UniCredit. We show that our model improves the estimation of the total loss distribution over time, compared to standard alternatives. In particular, this model provides estimations of the 99.9% quantile that are never exceeded by the historical total losses, a feature particularly desirable for banking regulators. [less ▲]

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See detailSupercritical fluid chromatography: a promising alternative to current bioanalytical techniques
Dispas, Amandine ULiege; Jambo, Hugues ULiege; André, Sébastien ULiege et al

in Bioanalysis (in press)

During the last years, chemistry was involved in the worldwide effort toward environmental problems leading to the birth of green chemistry. In this context, green analytical tools were developed as ... [more ▼]

During the last years, chemistry was involved in the worldwide effort toward environmental problems leading to the birth of green chemistry. In this context, green analytical tools were developed as modern Supercritical Fluid Chromatography in the field of separative techniques. This chromatographic technique knew resurgence a few years ago, thanks to its high efficiency, fastness and robustness of new generation equipment. These advantages and its easy hyphenation to MS fulfill the requirements of bioanalysis regarding separation capacity and high throughput. In the present paper, the technical aspects focused on bioanalysis specifications will be detailed followed by a critical review of bioanalytical supercritical fluid chromatography methods published in the literature. [less ▲]

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See detailMacroporous poly(ionic liquid)/ionic liquid gels via CO2-based emulsion-templating polymerization
Mathieu, Kevin ULiege; Jérôme, Christine ULiege; Debuigne, Antoine ULiege

in Polymer Chemistry (in press)

Structuring poly(ionic liquid)s (PILs) into porous materials or swelling PILs with free ionic liquids (ILs) has received specific attention recently and contributed to improve the performances of these ... [more ▼]

Structuring poly(ionic liquid)s (PILs) into porous materials or swelling PILs with free ionic liquids (ILs) has received specific attention recently and contributed to improve the performances of these materials used in a wide range of applications. The present work aims to take benefit of both approaches and produce macroporous PIL/IL gels in a single step through an innovative emulsion-templated polymerization method based on supercritical carbon dioxide (scCO2). More precisely, ILs vinyl monomers and crosslinkers were polymerized in the presence of non polymerizable ILs within the outer phase of a CO2-in-ILs high internal phase emulsion (HIPE). Specific macromolecular surfactants were synthesized by controlled radical polymerization techniques and tested for the stabilization of the CO2-in-ILs emulsions. While optimizing the polymerization conditions, we found that adding a limited amount of water in the medium was beneficial for the emulsion stability. Overall, this straightforward process gave access to macroporous polyHIPEs composed of poly(vinyl imidazolium) networks swollen by ‘free’ vinyl imidazolium-based ILs having interesting properties such as switchable polarity upon simple anion exchange reaction. [less ▲]

See detailPratiques de l'enquête
Pieron, Julien ULiege; Thoreau, François ULiege

Book published by Presses Universitaires de Liège (in press)

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See detailLe rire de Méduse. Entretien avec Donna Haraway
Pieron, Julien ULiege; Caeymaex, Florence ULiege; Despret, Vinciane ULiege

in Caeymaex, Florence; Despret, Vinciane; Pieron, Julien (Eds.) Habiter le trouble, avec Donna Haraway (in press)

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See detailDissensus, n°7. Dossier "Technique et politique"
Pieron, Julien ULiege

Book (in press)

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See detailCyclic and Fatigue Behaviour of Rock Materials: Review, Interpretation and Research Perspectives
Cerfontaine, Benjamin ULiege; Collin, Frédéric ULiege

in Rock Mechanics & Rock Engineering (in press)

The purpose of this paper is to provide a comprehensive state of the art of fatigue and cyclic loading of natural rock materials. Papers published in the literature are classified and listed in order to ... [more ▼]

The purpose of this paper is to provide a comprehensive state of the art of fatigue and cyclic loading of natural rock materials. Papers published in the literature are classified and listed in order to ease bibliographical review, to gather data (sometimes contradictory) on classical experimental results and to analyse the main interpretation concepts. Their advantages and limitations are discussed, and perspectives for further work are highlighted. The first section summarises and defines the different experimental set-ups (type of loading, type of experiment) already applied to cyclic/fatigue investigation of rock materials. The papers are then listed based on these different definitions. Typical results are highlighted in next section. Fatigue/cyclic loading mainly results in accumulation of plastic deformation and/or damage cycle after cycle. A sample cyclically loaded at constant amplitude finally leads to failure even if the peak load is lower than its monotonic strength. This subcritical crack is due to a diffuse microfracturing and decohesion of the rock structure. The third section reviews and comments the concepts used to interpret the results. The fatigue limit and S–N curves are the most common concepts used to describe fatigue experiments. Results published from all papers are gathered into a single figure to highlight the tendency. Predicting the monotonic peak strength of a sample is found to be critical in order to compute accurate S–N curves. Finally, open questions are listed to provide a state of the art of grey areas in the understanding of fatigue mechanisms and challenges for the future. [less ▲]

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See detailCreative Economy and Development: International Institution’s Perspectives
De Beukelaer, Christiaan; Vlassis, Antonios ULiege

in Labadi, Sophia (Ed.) The cultural turn in international aid: impacts and challenges for heritage and the creative industries' (2018)

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See detailNuovi culti eroici nell'alto Ellenismo: una riconsiderazione di destinatari, attori e contesti
Caneva, Stefano ULiege; Coppola, Alessandra

Conference (2018, November)

This paper explores the entanglement between social status and the bestowal of heroic honours upon deceased political leaders and elite members in the late-classical and early Hellenistic period ... [more ▼]

This paper explores the entanglement between social status and the bestowal of heroic honours upon deceased political leaders and elite members in the late-classical and early Hellenistic period. Epigraphic and literary sources shedding light on the establishment, justification and social impact of heroic honours practised by different social groups will be discussed, to investigate the implications of the social status of cult agents and recipients upon the definition of the position of honoured humans in relation to the superhuman sphere. This will also imply exploring the types of relationships existing between private heroic foundations and royal divine foundations in the studied period. Contrary to a generally accepted assumption, it will be argued that heroization was common for members of elite families, while it was not the primary option to reward local political leaders, since their honours were principally modelled after godlike honours. For instance, when they came into existence during the mid-Hellenistic period, cults for high-ranking civic leaders were largely modelled on godlike honours for monarchs, but were decreed after death – it will be argued – to preserve a hierarchical distinction between the social status of their recipients. The posthumous bestowal explains why honours for great civic benefactors also drew on typically heroic honours, such as public burial inside the city. However, similar contaminations of heroic and divine honours had already been exploited for the worshipped deceased kings of the early Hellenistic period (e.g. Alexander at Alexandria, Demetrius at Demetrias), so that a certain mixture of divine and heroic features could be said to have been directly transferred from royal to non-royal leaders. In neither case, however, did the presence of heroic features imply that cultic honours for Hellenistic political leaders would be commonly labelled as heroic. A revealing case is that of the Hellenistic leader Aratus, whose “fitting honours” decreed at Sicyon (Polyb. 8.12-7-8; Plut., Arat. 53) are labelled as heroic by moderns only because they were decreed posthumously. Similarly, at Megalopolis, the posthumous honours for the commander Philopoimen comprised a public tomb in the agora – a typically heroic honour – but were labelled as “honours equal to the gods”, not as heroic. We must wait for the late-Hellenistic and Imperial period to trace a significant multiplication of honours for political leaders explicitly labelled heroic. [less ▲]

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See detailRotational and continuous grazing does not affect the total net ecosystem exchange of a pasture grazed by cattle but modifies CO2 exchange dynamics
Gourlez de la Motte, Louis ULiege; Mamadou, Ossenatou; Beckers, Yves ULiege et al

in Agriculture, Ecosystems & Environment (2018), 253

Grassland carbon budgets are known to be greatly dependent on management. In particular, grazing is known to directly affect CO2 exchange through consumption by plants, cattle respiration, natural ... [more ▼]

Grassland carbon budgets are known to be greatly dependent on management. In particular, grazing is known to directly affect CO2 exchange through consumption by plants, cattle respiration, natural fertilisation through excreta, and soil compaction. This study investigates the impact of two grazing methods on the net ecosystem exchange (NEE) dynamics and carbon balance, by measuring CO2 fluxes using eddy covariance in two adjacent pastures located in southern Belgium during a complete grazing season. Rotational (RG) grazing consists of an alternation of rest periods and short high stock density grazing periods. Continuous grazing (CG) consists of uninterrupted grazing with variable stocking rates. To our knowledge, this is the first study to assess the impact of these grazing methods on total net ecosystem exchange and CO2 exchange dynamics using eddy covariance. The results showed that NEE dynamics were greatly impacted by the grazing method. Following grazing events on the RG parcel, net CO2 uptake on the RG parcel was reduced compared to the CG parcel. During the following rest periods, this phenomenon progressively shifted towards a higher assimilation for the RG treatment. This behaviour was attributed to sharp biomass changes in the RG treatment and therefore sharp changes in plant photosynthetic capacity. We found that differences in gross primary productivity at high radiation were strongly correlated to differences in standing biomass. In terms of carbon budgets, no significant difference was observed between the two treatments, neither in cumulative NEE, or in terms of estimated biomass production. The results of our study suggest that we should not expect major benefits in terms of CO2 uptake from rotational grazing management when compared to continuous grazing management in intensively managed temperate pastures. [less ▲]

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See detailRiparian characterization from remote sensing in a multiple scale perspectives. A few examples
Piégay, Hervé; Michez, Adrien ULiege; Raepple, Bianca et al

Conference (2018, October 18)

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See detailA la table du souverain. Modération, excès et hiérarchie dans les banquets de cour hellénistiques et impériaux
Caneva, Stefano ULiege

Conference (2018, October 04)

A travers une sélection de sources littéraires grecques et latines, datant de l’époque d’Alexandre jusqu’à la haute période impériale, on se propose de discuter quelques aspects de la thématique ... [more ▼]

A travers une sélection de sources littéraires grecques et latines, datant de l’époque d’Alexandre jusqu’à la haute période impériale, on se propose de discuter quelques aspects de la thématique concernant l’existence (ou l’absence) de règles morales auxquelles la conduite des souverains devrait être sujette par rapport à la consommation de la nourriture et du vin. Plutôt que de prendre en considération l’aspect médical de la diète royale, l’étude se focalise sur ses implications sociales et symboliques : notamment, le rôle de la consommation sociale de la nourriture dans la définition d’une royauté qui accepte d’obéir à des règles partagées de modération et d’autocontrôle, promues et protégés par les élites, ou qui, par contre, prétend de manifester sa dimension charismatique à travers une conduite se plaçant consciemment au-delà des limites imposées aux sujets. Les textes analysés discutent le thème du rapport entre le souverain et la nourriture soit à travers les récits de banquets devenus célèbres dans la tradition historiographique et rhétorique, soit par le biais de scènes mythiques ou de banquets historiques imaginaires, où la fiction littéraire sert à thématiser le rapport entre le souverain et les élites ainsi que la mise en place d’une hiérarchie de cour. Un aspect crucial de cette analyse concerne l’identification des classes sociales appelées, dans les textes, à définir les règles du rapport entre le roi et la nourriture, ainsi qu’à exercer le rôle de contrôleurs du respect de ces règles. Un autre aspect à considérer est l’appartenance sociale des auteurs des textes qui prescrivent, approuvent ou stigmatisent certaines pratiques. Considérées ensemble, ces deux perspectives nous permettront de discuter les intérêts et l’agenda des groupes qui s’expriment à travers ces textes. Une attention particulière sera donnée à l’époque de transition entre la fin de la période hellénistique et le début du Principat, lorsque la réflexion sur la sobriété ou la tryphè (ou, selon une perspective critique, la débauche) du roi s’inscrit dans une discussion plus large sur le choix de continuité ou de rupture entre le modèle royal hellénistique et le type de pouvoir monarchique universel expérimenté par les premiers empereurs. [less ▲]

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See detailEvaluation of Adaptive Facades: A case study of the Swiss School in Dubai
Bilir, Senem; Attia, Shady ULiege

in Luible, Andreas (Ed.) Adaptive Facades (2018, October)

Adaptive facades are performance based envelopes that are able to respond dynamically to climatic conditions. One of the recognized adaptive façade technologies is electrochromic glazing. However, very ... [more ▼]

Adaptive facades are performance based envelopes that are able to respond dynamically to climatic conditions. One of the recognized adaptive façade technologies is electrochromic glazing. However, very few studies evaluated the performance of electrochromic glazing on the building level. Therefore, we selected a case study of a certified educational building with a nearly zero energy building performance that includes an electrochromic facade. The overall aim of the research is to understand the performance requirements of electrochromic glazing and its overall contribution to energy saving s and thermal and visual comfort improvement. The performance of the Swiss International School in Dubai was analyzed based on interviews with the design and build team, monitored data and post occupancy evaluation. A systematic process mapping took place to review the performance indicators, simulation tools and team responsibilities during the design, construction and operation stages of the building. The paper identifies the key performance criteria of electrochromic glazing in relation to energy and comfort. Finally, we assess the significance of using electrochromic glazing from a technical point of view and share the learned lessons for architects and facade engineers [less ▲]

Detailed reference viewed: 53 (5 ULiège)