Recursos de colección

ORBi Open Repository and Bibliography (312.551 recursos)

In may 2007, the ULg's Administrative Board (joined in June 2007 by the FUSAGx) decided to create an institutional repository and defined a strong institutional self-archiving policy to increase the visibility, accessibility and impact of the University's publications (Board's decision). This decision led to the official launch, in November 2008, of the ORBi platform including both the Academic Bibliography and the Institutional Repository of the Wallonia-Europe University Academy.

Engineering, computing & technology

Mostrando recursos 1 - 20 de 1.116

  1. Personal Dose Computation with the Aid of Staff Monitoring system based on 3D Depth Cameras

    Abdelrahman, Mahmoud Eid Mahmoud; Vanhavere, Filip; Struelens, Lara; Phillips, Christophe; Seret, Alain
    For more than 50 years, passive dosimeters have been used to assess the dose to workers occupationally exposed to ionizing radiation. Such dosimeters are designed to measure the operational quantity Hp(10) as an estimate of the effective dose, E, which is a quantitative expression of the “radiation detriment” that cannot be measured directly. With these dosimeters, the results are mostly known only after some time, and wearing a dosimeter is often seen as a burden by some workers. Furthermore, the uncertainties associated with the present dosimeters (within a factor of 1.5 or 2 from the real value) are not negligible. In...

  2. Preliminary Finite Element Analyses on Seismic Resistant FREE from DAMage Beam to Column Joints under Impact Loading

    D'Antimo, Marina; Zimbru, Mariana; D'Aniello, Mario; Demonceau, Jean-François; Jaspart, Jean-Pierre; Landolfo, Raffaele
    Peer reviewed

  3. Bearing strength of shear connections for tubular structures: An analytical approach

    Latour, Massimo; Rizzano, Gianvittorio; D'Antimo, Marina; Demonceau, Jean-François; Jaspart, Jean-Pierre
    Peer reviewed

  4. A CubeSat for UV Astrophysics

    Desselle, Richard
    The full understanding of astrophysical sources requires access to a rather wide wavelength range: every wavelength domain provides another specific piece of information that is needed to solve the puzzle. Several important wavebands, such as the UV domain, can only be covered from space because of atmospheric absorption. This requires either large, sophisticated highly sensitive and versatile observatory satellites (such as IUE, HST, …) or much cheaper and smaller nano-satellites dedicated to a specific scientific question. In this presentation, I present the first results of a feasibility study of a 3U CubeSat for imaging photo-polarimetric observations of bright hot stars...

  5. Process Oriented Characterization in Bioleaching Co-Cu Minerals

    Nkulu, Guy; Gaydardzhiev, Stoyan
    Peer reviewed

  6. Mixture model in high-order statistics for peak factor estimation on low-rise building

    Rigo, François; Andrianne, Thomas; Denoël, Vincent
    To design reliable structures, extreme pressures and peak factors are required. In many applications of Wind Engineering, their statistical analysis has to be performed taking into account the non-Gaussianity of the wind pressures. With the increasing precision and sampling frequency of pressure sensors, large short and local peak events are more usually captured. Their relevance is naturally questioned in the context of a structural design. Furthermore, the increasing computational power allows for accumulation and analysis of larger data sets revealing the detailed nature of wind flows around bluff bodies. In particular, in the shear layers and where local vortices form, it...

  7. VIV response of a suspended sphere nearby the critical Reynolds number

    Andrianne, Thomas; Rigo, François; Denoël, Vincent
    The Vortex-Induced Vibration of a sphere connected to a flexible beam is investigated in air for Reynolds numbers including the critical value. For this value (ReC =3e5 ), wake disorganisation is expected in a static configuration. This fundamental fluid-structure interaction characterised by an axisymmetric configuration leads to vibrations in the lateral and longitudinal directions. Similarly to the well-known circular cylinder, a lock-in phenomenon will take place due to the effect of the motion of the body on the shedding process. An experimental aeroelastic model is designed, instrumented and tested in the wind tunnel of University of Liège. The objective is...

  8. Vortex induced vibrations of rectangular cylinders arranged on a grid

    Rigo, François; Andrianne, Thomas
    A grid arrangement made of one hundred rectangular cylinders fixed to the facade of a house generates strong and disturbing mono-harmonic noise. The cross-flow vibration of the rectangular cylinders is identified as the origin of the noise. The present article proposes a complete investigation of the Vortex Induced Vibration (VIV) combined with a grid effect. It is based on in situ measurements, numerical (finite elements and Computational Fluid Dynamics (CFD)) and extensive wind tunnel (WT) modelling. A comparison between unsteady pressure tap measurements and CFD results allows to understand the vortex shedding process and synchronisation type depending on the wind...

  9. Unsteady pressure measurement around aerodynamic bodies: Development of a calibration apparatus and wind tunnel testing

    Rigo, François
    Separated flows are complex but interesting to study because they are variable and unsteady. They are present for every bluff bodies and stalled streamlined bodies (at high angle of attack). Experimental aerodynamics is able to study these types of flow, using pressure sensors. Due to sensor size, pressure tubes are used to connect the pressure scanner to the tap (where the pressure is effectively measured). Statically, nothing is changed, but when an unsteady flow is studied, the signal measured by the sensor is perturbed by the tube. The Transfer Function of the tube has to be computed, to correct for...

  10. dynGENIE3: dynamical GENIE3 for the inference of gene networks from time series expression data

    Huynh-Thu, Vân Anh; Geurts, Pierre
    Peer reviewed

  11. Streamlining of the synthesis process of Pt/carbon xerogel electrocatalysts with high Pt loading for the oxygen reduction reaction in proton exchange membrane fuel cells applications

    Zubiaur, Anthony; Job, Nathalie
    Peer reviewed

  12. Vers l'identification non-linéaire des structures industrielles au moyen de sinus balayés

    Dossogne, Tilàn; Noël, Jean-Philippe; Kerschen, Gaëtan
    Les phénomènes vibratoires non-linéaires sont fréquemment rencontrés dans les structures mécaniques et aérospatiales. La division de ces structures en sous-systèmes assemblés ou l’usage de nouveaux matériaux favorisent l’apparition de mécanismes non-linéaires tels que le frottement, les impacts ou l'hystérésis. Il existe donc un besoin croissant en industrie de pouvoir détecter et identifier ces phénomènes non-linéaires sur des structures complexes et à grande échelle. L’ objectif de ce travail est d'établir une méthodologie d’identification des non-linéarités dans les structures industrielles, allant de la détection à la caractérisation et l’estimation de paramètres non-linéaires. Le processus d’identification est basé uniquement sur des mesures...

  13. Jean Englebert et le Mouvement métaboliste - Utopies et réalités

    Nguyen, Ngoc Luan
    La soirée-conférences Jean Englebert et l’Université de Liège constitue un événement-satellite d’Archidoc #02 (exposition Les utopies de Jean Englebert au musée Wittert du 6/10 au 22/12). Elle a pour objet de mettre en avant l’implication du Professeur Jean Englebert dans l’Université de Liège et en particulier au sein de la faculté des Sciences Appliquées. Deux aspects majeurs seront abordés : l’enseignement au sein de la formation des ingénieurs architectes et les travaux de recherche dans le cadre du CRAU (Centre de Recherche en Architecture et Urbanisme) dirigé par Jean Englebert. Chacune de ces thématiques sera présentée par un intervenant issu...

  14. L'urbanisme permutationnel intégré dans un dispositif pédagogique

    Nguyen, Ngoc Luan; Reuter, Iris
    Peer reviewed

  15. Aerated Extraction Column for Reactive Extraction from Fermentation Broth

    Bednarz, Andreas; Scherübel, Peter; Spieß, Antje; Pfennig, Andreas
    Peer reviewed

  16. Managing the urban colour: similarities and differences between European and Asian strategies

    Nguyen, Ngoc Luan; Teller, Jacques
    Peer reviewed

  17. Single-Drop Experiments for Challenging Conditions as Basis for Extraction-Column Simulations

    AYESTERÁN JEREZ, José Manuel; BUCHBENDER, Florian; Kalem, Murat; Kalvoda, Eva; Pfennig, Andreas
    Peer reviewed

  18. Tutorial Videos on Solvent Extraction

    Pfennig, Andreas
    Peer reviewed

  19. Tutorial Videos on Solvent Extraction

    Pfennig, Andreas
    Peer reviewed

  20. Stochastic multiscale model of MEMS stiction accounting for high order statistical moments of non-Gaussian contacting surfaces

    Hoang Truong, Vinh; Wu, Ling; Golinval, Jean-Claude; Arnst, Maarten; Noels, Ludovic
    Peer reviewed

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