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See detailComputer Simulations of the Sputtering of Metallic, Organic, and Metal−Organic Surfaces with Bin and C60 Projectiles
Delcorte, Arnaud; Leblanc, Christophe ULg; Poleunis, Claude et al

in Journal of Physical Chemistry C: Nanomaterials, Interfaces, and Hard Matter (2013), 117

This study focuses on the microscopic modeling of 0–25 keV Bi1–3–5 and C60 cluster impacts on three different targets (Au crystal, adsorbed Au nanoparticle, and organic solid), using molecular dynamics ... [more ▼]

This study focuses on the microscopic modeling of 0–25 keV Bi1–3–5 and C60 cluster impacts on three different targets (Au crystal, adsorbed Au nanoparticle, and organic solid), using molecular dynamics simulations, and on the comparison of the calculated quantities with recent experimental results, reported in the literature or obtained in our laboratory. The sputtering statistics are reported, showing nonlinearity of the sputtering yields with the number of cluster atoms at the same incident velocity for Bi1–5 bombardment. They are compared to experiments (especially for the organic target), and the microscopic explanation of the observations is analyzed. The results show that the respective behaviors and performances of the different projectiles are strongly dependent on the target, with clusters of heavy Bi atoms being more efficient at sputtering gold and, conversely, fullerene clusters inducing the largest sputtering yields of the organic material (mass matching). For organic targets, some important and novel conclusions of this work are the following: (i) The increase of the sputtering yield when going from Bi atoms to Bi clusters is insufficient to explain the much larger increase of characteristic ion yields, suggesting a projectile-dependent ionization probability. (ii) The extent of molecular fragmentation follows the order of Bi > Bi3 > Bi5 > C60, that is, softer emission with larger clusters. (iii) Even 5–10 keV Bi atoms create collective molecular motions and craters in the polymeric solid, though the collision cascades are rather dilute. Finally, a second series of simulations performed at low energies predict that 0.1–1 keV Bin clusters should not provide better results for sputtering and depth profiling than isoenergetic single atoms. [less ▲]

Detailed reference viewed: 21 (13 ULg)
See detailComputer Simulations of Ultrafast Magnetisation Reversal
Ostler, Thomas ULg

Doctoral thesis (2012)

Detailed reference viewed: 6 (1 ULg)
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See detailComputer Vision
Van Droogenbroeck, Marc ULg

Learning material (2015)

Detailed reference viewed: 818 (219 ULg)
See detailComputer Vision Systems: Seventh International Conference
Fritz, Mario; Schiele, Bernt; Piater, Justus ULg

Book published by Springer (2009)

Detailed reference viewed: 7 (0 ULg)
See detailComputer Vision Systems: Third International Conference
Crowley, James; Piater, Justus ULg; Vincze, Markus et al

Book published by Springer (2003)

Detailed reference viewed: 12 (0 ULg)
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See detailComputer-aided analysis of rigid and flexible multibody systems
Verlinden, Olivier; Bruls, Olivier ULg; Conti, Calogero et al

Learning material (2007)

Detailed reference viewed: 108 (17 ULg)
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See detailComputer-Aided Design of Redundant Sensor Networks
Heyen, Georges ULg; Dumont, Marie-Noëlle ULg; Kalitventzeff, Boris ULg

Poster (2002, May)

A systematic method to design sensor networks able to identify key process parameters with a required precision at a minimal cost is presented. The procedure is based on a linearised model, derived ... [more ▼]

A systematic method to design sensor networks able to identify key process parameters with a required precision at a minimal cost is presented. The procedure is based on a linearised model, derived automatically from a rigorous non-linear data reconciliation model. A genetic algorithm is used to select the sensor types and locations. [less ▲]

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See detailComputer-aided integrated design for machines with varying dynamics
da Silva, Maira M; Bruls, Olivier ULg; Swevers, Jan et al

in Mechanism & Machine Theory (2009), 44(9), 1733-1745

This paper discusses the integrated design of mechatronic systems with varying dynamics, such as serial and parallel machine tools. This characteristic affects the machine stability and performance. A ... [more ▼]

This paper discusses the integrated design of mechatronic systems with varying dynamics, such as serial and parallel machine tools. This characteristic affects the machine stability and performance. A computer-aided integrated design methodology is proposed and validated on a pick-and-place robot. It consists of two main steps: (i) the derivation of reduced models from a flexible multibody model and (ii) the systematic robust control design. Eventually, the integrated design of the system, considering both structural and control parameters, can be performed. [less ▲]

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See detailComputer-aided integrated design for mechatronic systems with configuration-dependent dynamics
da Silva, Maira M; Bruls, Olivier ULg; Desmet, Wim et al

Conference (2008, May)

Mechatronics deals with the integrated design of a mechanical system and its control system. Moreover, a large number of mechatronic systems may have their natural frequencies and mode shapes dependent on ... [more ▼]

Mechatronics deals with the integrated design of a mechanical system and its control system. Moreover, a large number of mechatronic systems may have their natural frequencies and mode shapes dependent on their spatial configuration, which inevitably affects the performance and the stability of the control system. In particular, mechatronic systems, such as machine tools and pick-and-place robots, can be classified as systems with configuration-dependent dynamics, since the relative motion between their flexible components can lead to time-varying boundary conditions. A parametric model able to capture this behavior is proposed using finite element based flexible multibody method. A global modal parameterization is applied for model-order reduction. A linear parameter varying model is derived from these reduced models and can be used in a control design scheme. This methodology is applied to a pick-and-place assembly robot with a gripper carried by a flexible beam (Fig. 1a). Vibrations, which depend on the beam length, decrease the throughput of the machine (Fig. 1b). Linear time invariant and linear parameter varying control strategies are evaluated using the derived linear parameter varying model. [less ▲]

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See detailComputer-aided integrated design for mechatronic systems with varying dynamics
da Silva, Maira M; Bruls, Olivier ULg; Paijmans, Bart et al

in Ulbrich, Heinz; Ginzinger, Lucas (Eds.) Motion and Vibration Control (Selected Papers from MOVIC 2008) (2009)

Some mechatronic systems have different spatial configurations or operation positions, and, as a consequence, their dynamic behavior, described by their most significant eigenfrequencies and mode-shapes ... [more ▼]

Some mechatronic systems have different spatial configurations or operation positions, and, as a consequence, their dynamic behavior, described by their most significant eigenfrequencies and mode-shapes, may vary in the configuration space. This inevitably affects the performance and the stability of the control system. Regarding the design of mechatronic systems with variable configuration, two main issues are treated in this paper: (i) the derivation of a parametric model able to capture the varying dynamics and the control actions, (ii) the integrated design of the structure and the controller. To cope with these issues, a parametric model is derived using a flexible multibody system technique based on the finite element method. A global modal parameterization is applied for model-order reduction, yielding a concise description of the flexible multibody model. A linear parameter varying controller is derived via interpolation of local controllers for the reduced models. This methodology is applied to a pick-and-place assembly robot with a gripper carried by a flexible beam. Eventually, design tradeoffs are evaluated considering the performance of the active system for different structural configurations. [less ▲]

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See detailComputer-Aided Tissue Engineering of the Anterior Cruciate Ligament
Laurent, Cédric ULg

in Journal of Biomechanics (2012)

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See detailComputer-Aided Tissue Engineering: application to the case of Anterior Cruciate Ligament Repair
Laurent, Cédric ULg; DURVILLE, D; VAQUETTE, C et al

in Lecca, Paola (Ed.) Biomechanics of Cells and Tissues: Experiments, Models and Simulations (2012)

Detailed reference viewed: 25 (0 ULg)
See detailComputer-Aided Verification, Proc. 7th Int. Conference
Wolper, Pierre ULg

Book published by Springer-Verlag (1995)

Detailed reference viewed: 11 (0 ULg)
See detailComputer-assisted tomography for liquid imaging in trickle-flow columns
Toye, Dominique ULg; Marchot, Pierre ULg; Crine, Michel ULg et al

in Non-invasive Monitoring of Multiphase Flows (1996)

Detailed reference viewed: 9 (1 ULg)
See detailComputer-Based Analyses of Structures Exposed to Fire
Franssen, Jean-Marc ULg

Scientific conference (2000, March 14)

Detailed reference viewed: 2 (1 ULg)
See detailComputer-Based Analyses of Structures Exposed to Fire
Franssen, Jean-Marc ULg

Scientific conference (2000, March 23)

Detailed reference viewed: 13 (1 ULg)
Peer Reviewed
See detailA computer-based exploration of the lexical possibilities of intercomprehension: Finding German cognates of Dutch words
Möller, Robert ULg

in Zeevaert, Ludger; ten Thije, Jan (Eds.) Receptive Multilingualism and intercultural communication (2007)

Detailed reference viewed: 97 (4 ULg)
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See detailComputer-based monitoring of global cardiovascular dynamics during acute pulmonary embolism and septic shock in swine
Revie, JA; Stevenson, D; Chase, JG et al

in Critical Care (2012), 16 (Suppl 1)

Detailed reference viewed: 16 (3 ULg)