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See detailRéférentiel Quartiers Durables
Teller, Jacques ULg; Marique, Anne-Françoise ULg; Loiseau, Véronique ULg et al

Book published by SPW DGO 4 - Guides méthodologiques (2014)

Basé sur 25 critères couvrant 5 thématiques, le Référentiel Quartiers Durables est destiné à permettre une évaluation des projets de quartier dès les phases de planification et d’élaboration du plan masse ... [more ▼]

Basé sur 25 critères couvrant 5 thématiques, le Référentiel Quartiers Durables est destiné à permettre une évaluation des projets de quartier dès les phases de planification et d’élaboration du plan masse. il peut s’appliquer à des permis d’urbanisation ou des outils d’urbanisme comme lors de concours ou d’appels à projets. [less ▲]

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See detailArtistic separation versus artistic mixing in European multicultural cities
Martiniello, Marco ULg

in Identities: Global Studies in Culture and Power (2014), 21(1), 1-9

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See detailAdolf Eichmann sous la loupe des tests projectifs: TAT, Rorschach, Szondi
Peralta, Alberto; Kramer, Richard; Stassart, Martine ULg

in Szondiana (2014)

Under consideration of three major projective personality tests (TAT, Rorschach and Szonditests) it appears that Adolf Eichmann who has organized the deportation of jewish european people to Auschwitz ... [more ▼]

Under consideration of three major projective personality tests (TAT, Rorschach and Szonditests) it appears that Adolf Eichmann who has organized the deportation of jewish european people to Auschwitz, was no common individual but a perverse one with schizoparanoïd features behind an obsessionnal mask. These data contradict the famous opinion of Hanna Arendt about "the banality of evil" [less ▲]

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See detailEvaluation of the Response of Shear Critical Walls Using a Three-Parameter Kinematic Theory
Mihaylov, Boyan ULg; Hannewald, Pia; Beyer, Katrin

in The 4th International fib Congress 2014 Mumbai - Proceedings (2014, February)

This paper discusses a newly developed three-parameter kinematic theory (3PKT) for shear critical walls with the help of four wall tests. The 3PKT is used to predict the pre- and post- peak response of ... [more ▼]

This paper discusses a newly developed three-parameter kinematic theory (3PKT) for shear critical walls with the help of four wall tests. The 3PKT is used to predict the pre- and post- peak response of the test units. Comparisons are performed with finite element (FE) models and plastic hinge models in combination with a shear degradation model. It is found that the latter underestimate the displacement capacity of the walls while the former do not predict well the post-peak response. The 3PKT with only three degrees of freedom captures the complete response of the walls provided that the size of the critical loading zone (CLZ) of the wall is well predicted. [less ▲]

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See detail3-D Modeling of Thin Sheets in the Discontinuous Galerkin Method for Transient Scattering Analysis
Boubekeur, Mohamed; Kameni, Abelin; Bernard, Laurent et al

in IEEE Transactions on Magnetics (2014), 50(2), 493-496

This paper presents a modeling of thin sheets. An interface condition based on analytical solution is used to avoid a fine mesh. This condition is integrated in a time domain Discontinuous Galerkin method ... [more ▼]

This paper presents a modeling of thin sheets. An interface condition based on analytical solution is used to avoid a fine mesh. This condition is integrated in a time domain Discontinuous Galerkin method in order to evaluate the shielding effectiveness. This approach is validated by a comparison with analytical solution. 2D and 3D cavities are simulated to illustrate the efficiency of the condition. [less ▲]

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See detailApproximate and Efficient Methods to Assess Error Fields in Spatial Gridding with Data Interpolating Variational Analysis (DIVA)
Beckers, Jean-Marie ULg; Barth, Alexander ULg; Troupin, Charles ULg et al

in Journal of Atmospheric & Oceanic Technology (2014), 31(2), 515-530

We present new approximate methods to provide error fields for the spatial analysis tool Diva. It is first shown how to replace the costly analysis of a large number of covariance functions by a single ... [more ▼]

We present new approximate methods to provide error fields for the spatial analysis tool Diva. It is first shown how to replace the costly analysis of a large number of covariance functions by a single analysis for quick error computations. Then another method is presented where the error is only calculated in a small number of locations and from there the spatial error field itself interpolated by the analysis tool. The efficiency of the methods is illustrated on simple schematic test cases and a real application in the Mediterranean Sea. These examples show that with these methods one has the possibility for quick masking of regions void of sufficient data and the production of "exact" error fields at reasonable cost. The error-calculation methods can also be generalized for use with other analysis methods such as 3D-Var and are therefore potentially interesting for other implementations. [less ▲]

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See detailImportance of recent extreme weather variation in Djibouti and need for impact quantification
Nour Ayeh, Moustapha; Mahamoud, Ayan; Saad, Osman et al

Poster (2014, February)

This analysis shows that the current rainfall deficit is exceptional and historically unique. The significant population migration induced by the drought to Djibouti city must be supervised, especially ... [more ▼]

This analysis shows that the current rainfall deficit is exceptional and historically unique. The significant population migration induced by the drought to Djibouti city must be supervised, especially during their spontaneous settling. This presented example confirms that current rainfall shortages and increasing temperature extremes are impactinglocal people who urgently need adaptation and DRR strategies. It is necessary to reduce exposure to hydrological risks of these affected populations, in order that victims of the drought are not carried away by a rainfall excess. [less ▲]

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See detailPrecision synthesis of poly(ionic liquid)-based block copolymers by cobalt-mediated radical polymerization and preliminary study of their self-assembling properties
Coupillaud, Paul; Fèvre, Maréva; Wirotius, Anne-Laure et al

in Macromolecular Rapid Communications (2014), 35(4), 422-430

A poly(ionic liquid)-based block copolymer (PIL BCP), namely, poly(vinyl acetate)-b-poly(N-vinyl-3-butylimidazolium bromide), PVAc-b-PVBuImBr, is synthesized by sequential cobalt-mediated radical ... [more ▼]

A poly(ionic liquid)-based block copolymer (PIL BCP), namely, poly(vinyl acetate)-b-poly(N-vinyl-3-butylimidazolium bromide), PVAc-b-PVBuImBr, is synthesized by sequential cobalt-mediated radical polymerization (CMRP). A PVAc precursor is first prepared at 30 °C in bulk by CMRP of VAc, using bis(acetylacetonato)cobalt(II), Co(acac)2, and a radical source (V-70). Growth of PVBuImBr from PVAc-Co(acac)2 is accomplished by CMRP in DMF/MeOH (2:1, v/v). This PIL BCP self-assembles in the sub-micron size range into aggregated core–shell micelles in THF, whereas polymeric vesicles are observed in water, as evidenced by dynamic light scattering (DLS) and transmission electron microscopy (TEM). Thin-solid sample cut from raw materials analyzed by TEM shows an ordered lamellar organization by temperature-dependent synchrotron small-angle X-ray scattering (SAXS). Anion exchange can be accomplished to achieve the corresponding PIL BCP with bis(trifluorosulfonyl)imide (Tf2N−) anions, which also gives rise to an ordered lamellar phase in bulk samples. A complete suppression of SAXS second-order reflection suggests that this compound has a symmetric volume fraction (f ≈ 0.5). SAXS characterization of both di- and triblock PIL BCP analogues previously reported also shows a lamellar phase of very similar behavior, with only an increase of the period by about 8% at 60 °C. [less ▲]

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See detailModalités prescriptives des nouveaux dispositifs de gestion et logiques identitaires des managers publics
Pichault, François ULg; Schoenaers, Frédéric ULg

in RH Publica : (2014), 4-2013(oct-nov-dec), 16-21

Les pouvoirs locaux sont soumis, comme tous les autres niveaux de pouvoir, à de profonds mouvements de « managérialisation », dont la récente transformation des titres de secrétaire communal et de ... [more ▼]

Les pouvoirs locaux sont soumis, comme tous les autres niveaux de pouvoir, à de profonds mouvements de « managérialisation », dont la récente transformation des titres de secrétaire communal et de receveur communal en directeur général et directeur financier sont des illustrations emblématiques. Les pouvoirs communaux sont désormais invités à rédiger des « programmes stratégiques transversaux » (PST) et à se doter de divers outils de gestion en vue d’améliorer le service aux citoyens dans un cadre budgétaire restreint. Le présent article propose une réflexion sur la capacité de ces nouveaux outils à façonner l’action publique au niveau du management intermédiaire… [less ▲]

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See detailImmunomodulatory effects of Rapamycin in xenogeneic GVHD
Ehx, Grégory ULg

Poster (2014, January 31)

Graft-versus-host disease (GVHD) remains a major cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation (HSCT). Several studies have shown that rapamycin (RAPA), an mTOR ... [more ▼]

Graft-versus-host disease (GVHD) remains a major cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation (HSCT). Several studies have shown that rapamycin (RAPA), an mTOR inhibitor with immunosuppressive properties, may reduce GVHD severity and mortality, notably by favoring regulatory T cells (Tregs) proliferation in vivo and in vitro. However, very few data have been reported about the global impact of this drug on the immune system in the context of GVHD. The present work investigates the cellular mechanisms by which RAPA delays death from xenogeneic GVHD induced by peripheral blood mononuclear cells infusion in NSG mice. Our results show that RAPA injections significantly delay death from xenogeneic GVHD and reduce disease severity. Flow cytometric analyses highlighted a strong reduction of human cells chimerism in mice together with higher CD4+/CD8+ T cells balance due to a lower proliferation of CD8+ T cells. In addition, the frequencies of naive CD4+ and CD8+ T cells were higher and the CD4+ T cells showed a reduced effector phenotype (CD45RO+CD27-). Tregs were positively affected as RAPA up-regulated their expression of Bcl-2 and Ki67 as well as their STAT5 phosphorylation level, leading to higher Treg frequency in treated mice. Altogether these data demonstrate that RAPA delays xenogeneic GVHD by lowering human chimerism and effector CD4+ frequency as well as promoting Tregs. [less ▲]

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See detailDroit constitutionnel - Dossier de documentation (année 2013-2014)
Behrendt, Christian ULg

Learning material (2014)

Le document constitue le Dossier de documentation, à lire par les étudiants en parallèle au cours ex cathedra, de l'enseignement de Droit constitutionnel dispensé à l'Université de Liège en 2e année de ... [more ▼]

Le document constitue le Dossier de documentation, à lire par les étudiants en parallèle au cours ex cathedra, de l'enseignement de Droit constitutionnel dispensé à l'Université de Liège en 2e année de bachelier en droit et en 2e année de bachelier en science politique. En plus du dossier de documentation, les étudiants sont par ailleurs invités à lire, au titre de la matière à connaître pour l'examen, l'ouvrage "L'action du Roi en Belgique depuis 1831" de Jean Stengers (Bruxelles, Racine, 3e édition, 2008). [less ▲]

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See detailLandesbeitrag Belgien : Wesen und Gestalt der Verfassungsgerichtsbarkeit in Belgien
Behrendt, Christian ULg

in von Bogdandy, Armin; Grabenwarter, Christoph; Huber, Peter M. (Eds.) Ius Publicum Europaeum - Band VI - Verfassungsgerichtsbarkeit (2014)

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See detailAn exact bi-directional dynamic programming algorithm for an elementary shortest path problem with variable service start time
Arda, Yasemin ULg; Crama, Yves ULg; Kucukaydin, Hande ULg

Conference (2014, January 31)

We consider an elementary shortest path problem with resource constraints (ESPPRC), where a capacitated single vehicle serves customers by respecting their associated time windows. The vehicle can start ... [more ▼]

We consider an elementary shortest path problem with resource constraints (ESPPRC), where a capacitated single vehicle serves customers by respecting their associated time windows. The vehicle can start servicing the customers at any desired time, but it can be used for a fixed amount of time. The total transportation cost depends on the total distance traveled and the total amount of time that the vehicle spends by performing the assigned trip. On the other hand, each served customer yields a revenue. Thus, the aim is to identify the path to be followed and the start time of the vehicle from the depot that minimize the total transportation cost minus the gained revenues. This kind of a problem can be encountered as a pricing subproblem when a branch-and-price algorithm is applied to solve vehicle routing problems with additional constraints. In such a case, the revenues correspond to the dual prices of the visited vertices. It is known that the classical ESPPRC can be solved to optimality by implementing a dynamic programming (DP) algorithm. However, our problem has to take an infinite number of Pareto-optimal states into consideration, since the vehicle can leave the depot at any point in time and charges depending on the total traveling and waiting time. We propose an exact DP algorithm which can deal with an infinite number of Pareto-optimal states by representing total traveling and waiting time as a piecewise linear function of the service start time at the depot and develop suitable dominance rules. Furthermore, a column generation algorithm is devised for solving the relaxed set covering formulation of the related vehicle routing problem where new columns are determined by the proposed DP algorithm. Finally, computational results are presented. [less ▲]

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See detailHomogenization with propagation of instabilities through the different scales
Noels, Ludovic ULg; Wu, Ling ULg; Nguyen, Van Dung ULg et al

Scientific conference (2014, January 31)

In this work, multi-scale methods with strain softening are developed in the contexts of damage modeling for composite laminates and of buckling analyses in cellular materials. First, an anisotropic ... [more ▼]

In this work, multi-scale methods with strain softening are developed in the contexts of damage modeling for composite laminates and of buckling analyses in cellular materials. First, an anisotropic gradient–enhanced continuum damage model is embedded in a mean–field homogenization (MFH) process for elasto-plastic composites. The homogenization procedure is based on the newly developed incremental secant mean-field homogenization formulation, for which the residual stress and strain states reached in the phases upon a fictitious elastic unloading are considered as starting point to apply the secant method. The mean stress fields in the phases are then computed using isotropic secant tensors, which are naturally used to define the Linear Comparison–Composite The resulting multi– scale model is then applied to study the damage process at the meso–scale of laminates, and in particular the damaging of plies in a composite stack. By using the gradient–enhanced continuum damage model, the problem of losing uniqueness upon strain softening is avoided. Second, an efficient multi–scale finite element framework capturing the buckling instabilities in cellular materials is developed. As a classical multi–scale computational homogenization scheme loses accuracy with the apparition of the macroscopic localizations resulting from the micro–buckling, the second order multi–scale computational homogenization scheme is considered. This second–order computational framework is enhanced with the following novelties so that it can be used for cellular materials. At the microscopic scale, the periodic boundary condition is used because of its efficiency. As the meshes generated from cellular materials exhibit a large void part on the boundaries and are not conforming in general, the classical enforcement based on the matching nodes cannot be applied. A new method based on the polynomial interpolation2 without the requirement of the matching mesh condition on opposite boundaries of the representative volume element (RVE) is developed. Next, in order to solve the underlying macroscopic Mindlin strain gradient continuum of this second–order scheme by the displacement–based finite element framework, the treatment of high order terms is based on the discontinuous Galerkin (DG) method to weakly impose the C1-continuity. Finally, as the instability phenomena are considered at both scales of the cellular materials, the path following technique is adopted to solve both the macroscopic and microscopic problems. [less ▲]

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