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See detailObservations codicologiques sur PSI 1.18 + 19 (MP³ 344 + 1207 = LDAB 2412)
Carlig, Nathan ULiege

in Analecta Papyrologica (in press)

This article presents the results of the autoptical analysis of PSI 1.18 + 19 (rests of a 5th century papyrus codex), which contains school texts. A codicological reconstruction is proposed, as well as ... [more ▼]

This article presents the results of the autoptical analysis of PSI 1.18 + 19 (rests of a 5th century papyrus codex), which contains school texts. A codicological reconstruction is proposed, as well as remarks on the use of miniature codices and of binios in papyrus codices. [less ▲]

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See detailCarte géologique de Wallonie à l'échelle 1:25 000. Hamoir-Ferrières n°49/1-2
Marion, Jean-Marc ULiege; Barchy, Laurent

Cartographic material (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 previous editions of Lohest and Fourmarier (1900)

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See detailElectric Power Network State Tracking from Multirate Measurements
Alcaide-Moreno, Boris; Fuerte-Esquivel, Claudio; Glavic, Mevludin ULiege et al

in IEEE Transactions on Instrumentation and Measurement (in press)

This paper proposes a novel tracking state estimator to process both fast-rate synchronized phasor and slow rate SCADA measurements. The former are assumed to be in limited number. The latter are ... [more ▼]

This paper proposes a novel tracking state estimator to process both fast-rate synchronized phasor and slow rate SCADA measurements. The former are assumed to be in limited number. The latter are exploited as and when they arrive to the control center. In order to restore observability, after each execution of the tracking state estimator, forecasted SCADA measurements are used as pseudo-measurements in the next estimation. An event detection analysis allows assessing if the system is in quasi steady-state. If so, an innovation analysis is performed to identify and eliminate erroneous SCADA measurements. The system state is computed by Hachtel’s augmented matrix method. The option of exploiting time-tagged SCADA measurements is also considered. The method is illustrated through detailed dynamic simulations of a test system evolving towards voltage collapse, with and without emergency control. [less ▲]

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See detailHydraulic determination of dam releases to generate warning waves in a mountain stream: performance of an analytical kinematic wave model
Stilmant, Frédéric; Pirotton, Michel ULiege; Archambeau, Pierre ULiege et al

in Journal of Hydraulic Engineering (in press)

In this case study, we study the generation of warning waves with prescribed characteristics in a mountain stream. We determine which dam release will generate the desired warning wave. We solve this ... [more ▼]

In this case study, we study the generation of warning waves with prescribed characteristics in a mountain stream. We determine which dam release will generate the desired warning wave. We solve this inverse problem following a two-model approach. An analytical kinematic model is used for a preliminary design of the dam release and a detailed two-dimensional (2D) fully dynamic model is used to converge to the final solution. Although the presented case study is far from an idealized academic case, the analytical model performs well and, beyond its role for preliminary design, turns out to be of prime interest for both understanding and discussing the results of the detailed 2D model. The complex interactions between the release hydrograph, the geometry of the river and the friction formula are brought to light by the analytical model, which highlights the complementarity of both models and the usefulness of such a two-model approach. [less ▲]

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See detailPsychopathologie et monde social : les limites de l'empathie et de la sympathie
Englebert, Jérôme ULiege

in Philosophie (in press)

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See detailInvestigating the impact of river floods on travel demand based on an agent-based modeling approach: The case of Liège, Belgium
Saadi, Ismaïl ULiege; El Saeid Mustafa, Ahmed Mohamed ULiege; Teller, Jacques ULiege et al

in Transport Policy (in press)

In Belgium, river floods are among the most frequent natural disasters and they may have important consequences on travel demand. In order to better understand how the travel patterns vary, we propose to ... [more ▼]

In Belgium, river floods are among the most frequent natural disasters and they may have important consequences on travel demand. In order to better understand how the travel patterns vary, we propose to set up a large scale scenario based on MATSim for guarantying an accurate assessment of the impact of river floods on the transportation system. As inputs, the current agent-based model requires a base year population. A synthetic population with respective set of attributes is generated as a key input. Afterwards, agents are assigned activity chains through an activity-based generation process. Finally, the synthetic population and the transportation network are integrated into MATSim. Regarding data, households travel surveys, OD matrix of Belgium have been used to set up the demand. For simulating river floods effects, a steady-state inundation map has been integrated within MATSim. In the current study, five scenarios have been tested where critical links are associated various levels of service, i.e. 10%, 25%, 50%, 75% and 100% (base case scenario). They are systematically compared to the standard scenario to estimate the deviations in terms of traffic patterns and travel times. The results suggest that compared to the standard scenario, the average trip travel time increased by 16.36%, 44.44%, 126.77% and 144.44% with respect to scenarios 75%, 50%, 25% and 10% respectively. Also, the traffic flows have been re-distributed more uniformly across the transportation network. Roads with important traffic volumes are subjected to a decrease of activity on the contrary of roads with low traffic volumes. A very few studies have focused on how river floods affect transportation systems, this paper provided new insights in term of methodology and traffic patterns analysis under disruptions. [less ▲]

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See detailUnique alternating peptide-peptoid copolymers from dipeptides via Ugi reaction in water
Al Samad, Assala ULiege; De Winter, Julien; Gergaux, Pascal et al

in Chemical Communications (in press)

Herein, we developed a strainghtforward aqueous synthesis of unprecedented alternating peptide-peptoid copolymers via Ugi four-component reaction applied to dipeptides. Functional peptide-peptoid ... [more ▼]

Herein, we developed a strainghtforward aqueous synthesis of unprecedented alternating peptide-peptoid copolymers via Ugi four-component reaction applied to dipeptides. Functional peptide-peptoid copolymers as well as block copolymers were produced in a single step in the presence of acrylic acid and carboxylic acid-terminated poly(ethylene glycol). The thermoresponsiveness of these polymers is highlighted [less ▲]

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See detailEnhanced stabilization of water-scCO2 interface by block-like spontaneous gradient copolymers
Liu, Xuan; Wang, Mingxi; Harrisson, Simon et al

in ACS Sustainable Chemistry & Engineering (in press)

There is an increasing interest in the specific physicochemical properties of gradient copolymers at interfaces. In this work, the phase behavior and interfacial properties of amphiphilic gradient ... [more ▼]

There is an increasing interest in the specific physicochemical properties of gradient copolymers at interfaces. In this work, the phase behavior and interfacial properties of amphiphilic gradient copolymers at the water/CO2 interface are explored and compared to that of diblock copolymer counterparts. It is observed that spontaneous amphiphilic block-like gradient copolymers made of N,N-dimethylacrylamide, vinyl pivalate, and vinyl acetate exhibit slightly lower cloud point pressures in supercritical carbon dioxide (scCO2) than the corresponding diblock copolymers. Much more pronounced differences are established at the water/scCO2 interface, with larger critical aggregation concentration (CAC), much faster adsorption kinetics and equilibration, and lower surface tension for gradient copolymers. RAFT/MADIX polymerization allows the control of molar mass, composition, and microstructure of the copolymers of the study. These findings shed light on how microstructural control in amphiphilic copolymers can give access to a new range of macromolecular emulsifiers for CO2 media with improved properties. [less ▲]

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See detailDifferential contributions of default and dorsal attention networks to remembering thoughts and external stimuli from real-life events
Stawarczyk, David ULiege; Jeunehomme, Olivier ULiege; D'Argembeau, Arnaud ULiege

in Cerebral Cortex (in press)

Episodic memories are typically composed of perceptual information derived from the external environment and representations of internal states (e.g., one’s thoughts during prior episodes). To date ... [more ▼]

Episodic memories are typically composed of perceptual information derived from the external environment and representations of internal states (e.g., one’s thoughts during prior episodes). To date, however, research has mostly focused on the remembrance of external stimuli, such that little is known about how internal mentation is represented within episodic memory. In the present fMRI study, we examined the neural correlates of these two components of episodic memories using a novel method of cuing memories from photographs taken during real-life events. We found that, compared to corresponding semantic memory tasks, memories for internal thoughts and external elements were associated with activity in brain areas supporting episodic recollection. Most importantly, however, the two kinds of memories also showed differential activation in large-scale brain networks: the remembrance of external elements was associated with greater activity in the dorsal attention network, whereas memories of internal thoughts mainly recruited default network areas. These findings shed new light on the representation of internal and external aspects of prior experience within episodic memory. The default network may contribute to the reinstatement of thoughts experienced during past events, whereas the dorsal attention network may support the allocation of attention to visuo-spatial features within episodic memory representations. [less ▲]

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See detailNeuro-functional correlates of the protective effects of exercise against cocaine sensitization and dopamine D2 receptors density: a [18F]Fallypride microPET study.
Becker, Guillaume ULiege; Lespine, Louis-Ferdinand ULiege; Serrano Navacerrada, Maria Elisa ULiege et al

in Molecular Imaging & Biology (in press)

Preclinical studies suggest that free access to a running wheel can attenuate behavioural effects of addictive drugs such as psychomotor sensitization to cocaine in rodents. This phenomenon has an ... [more ▼]

Preclinical studies suggest that free access to a running wheel can attenuate behavioural effects of addictive drugs such as psychomotor sensitization to cocaine in rodents. This phenomenon has an integral role in the process of drug addiction in craving and relapse (Steketee and Kalivas, 2011). Free wheel-running was recently shown to be efficacious at preventing the initiation or the long-term expression of psychomotor sensitization to cocaine in mice or rats (Diaz et al., 2013; Geuzaine and Tirelli, 2014). In the present study, we investigated the neuro-functional correlates of the protection against psychomotor sensitization to cocaine afforded by free wheel-running on dopaminergic neurotransmission, using microPET imaging with [18F]Fallypride, a Dopamine 2 receptor (D2R) antagonist. Sixty-four 28-day-old female C57BL/6J mice were randomly assigned to one of the two housing conditions, defined by the presence or the absence of a running wheel in the cage over a 6-week pre-testing period. Since mice from the two types of housing received either saline (controls) or cocaine (8 mg/kg, i.p.) during testing (9 once-daily sessions to establish sensitization plus 1 single session to test its expression), a basic 2x2 randomized blocks design was generated (2-way ANOVA and planned comparisons; n=10). Experimentation lasted 85 days, with a 42-day period of pre-testing and a 3-week interval preceding the test for long-term expression of sensitization (LTES). All mice underwent a microPET (Focus 120, Siemens) the day after the LTES. The microPET protocol consisted of a 60 min. dynamic acquisition after the injection of 10 MBq of [18F]Fallypride in the tail vein. Wheel-running strongly and significantly attenuated LTES (interaction) to cocaine (Cohen’s d=1.63; t(21)=3.75, p<.001) and cocaine-treated mice exhibited a clear-cut and significant increase (main effect) of the [18F]Fallypride BP (d=0.88, t(31)=2.45, p =.02). Wheel-running induced an overall moderate-sized decrease (main effect) of the [18F]Fallypride BP, but without achieving statistical significance (d=0.64, t(31)=1.79, p =.08). These findings suggest that LTES is associated with an increase of the [18F]Fallypride BP in the mouse striatum, probably reflecting an increase in postsynaptic D2R density in this region. Also, the protecting effect of free running on psychomotor sensitization goes together with a decrease in D2R density in the striatum of exercised mice. We intend to complement the present study with an identical experiment to reach a total number of 80 mice (n=20). This will confer to our study a sufficient power (80%) for the main effect of wheel-running exercise on [18F]Fallypride BP to be detected at an alpha-level of 5%. Finally, autoradiography studies, performed on the same mice with [18F]Fallypride, will strengthen our in vivo results. [less ▲]

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See detailKings and Elites in an Intercultural Tradition: From Diodorus to the Egyptian Temples
Caneva, Stefano ULiege

in Michel, Patrick; Murray, Jackie (Eds.) Elite Self-Representation in the Ancient Mediterranean (in press)

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See detailLe rôle du gymnase : espace, rituels et acteurs sociaux dans une perspective comparatiste
Caneva, Stefano ULiege

in Lenzo, Giuseppina; Nihan, Christophe (Eds.) Les cultes aux rois et aux héros dans l’antiquité : continuités et changements à l’époque hellénistique (in press)

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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 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 ▲]

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See detailAdaptive Facades Performance Assessment, interviews with facade experts
Attia, Shady ULiege; Bilir, Senem; Safy, Taha

Report (2018)

Adaptive facades can ensure step-change progresses in the energy efficiency and the use of renewable energy while improving the comfort of the occupants. Therefore, the purpose of this structured ... [more ▼]

Adaptive facades can ensure step-change progresses in the energy efficiency and the use of renewable energy while improving the comfort of the occupants. Therefore, the purpose of this structured interview is to assess advantages, disadvantages and future expectations considering the adaptive facades. This work is a part of actions of The COST Action TU1403 Adaptive Façade Network. The objective of this report is to gain an understanding of how experts currently define adaptive façade systems, which simulation tools they use, the major strengths, weaknesses, opportunities and treats of adaptive façade systems, key performance indicators they use and their vision for the future of adaptive facades. With this information gathered, it is anticipated that adaptive façade professionals will carry on assessment of adaptive facades. A qualitative study design was employed, using semi-structured interviews. Interviewees working in academia and practice were selected. The interviewees represented the range of possible adaptive facade professionals, from researchers and designers considered optimization in the assessment of adaptive facades. Also, every interviewed expert was asked to approve their responses and add any additional comment to their answers. [less ▲]

Detailed reference viewed: 28 (7 ULiège)