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See detailContributions to the development of a test-day model adjusted to New Zealand dairy cattle
Vanderick, Sylvie ULg

Master's dissertation (2004)

A test-day model was developed in order to study the feasibility and the usefulness of a random regression test-day model based on dairy cattle data from New Zealand. (Co)variance components were ... [more ▼]

A test-day model was developed in order to study the feasibility and the usefulness of a random regression test-day model based on dairy cattle data from New Zealand. (Co)variance components were estimated first within breeds then across breeds for Holstein-Friesian and Jersey animals. Results from single breed analysis showed that there are several differences between the two main breeds of dairy cattle in New Zealand. This was confirmed with the genetic correlations below one (r²= 0.926 for milk in first lactation) for breed specific additive genetic effects provided by the across breeds analysis. The specificity of the model used was first the capacity for taking account of these differences between breeds since more than one third of the dairy population are crossbred; and secondly the estimation of different breeding values considering each animal as a potential mate within each of the two breeds. From genetic evaluations, ranking changes in sires were observed by using the model with breed specific additive genetic effects and a model assuming the same breed composition for all animals. This first investigation showed the opportunity to carry on more research in the way to develop an accurate test-day model permitting to evaluate the crossbred dairy cattle of New Zealand and to perform an optimal selection of animals in function of the mating strategy to apply. [less ▲]

Detailed reference viewed: 45 (7 ULg)
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See detailContributions to the history of the germinal vesicle, and of the first embryonic nucleus
Van Beneden, Édouard ULg

in Quarterly Journal of Microscopical Science (The) (1876), 2(16), 153-182

Detailed reference viewed: 11 (4 ULg)
Peer Reviewed
See detailContributions to the knowledge about the seismic behaviour of typical Belgian masonry houses
Degée, Hervé ULg; Plumier, André ULg

in Proceedings of the 8th International Masonry Conference (2010)

Detailed reference viewed: 74 (8 ULg)
See detailContributions to the modelling of fires in buildings and their effects on structures
Franssen, Jean-Marc ULg

Scientific conference (1998, July 24)

Detailed reference viewed: 4 (1 ULg)
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See detailContributions to the process modelling of resin infusion under flexible tooling (RIFT) manufacturing for composite aerostructures
Pierce, R.S.; Falzon, B.G.; Thompson, M.C. et al

in Proceedings of ICCM19 (2013, July)

The cost of manufacturing textile-reinforced composite aerostructures using Resin Infusion under Flexible Tooling (RIFT) can be reduced by computational modelling. This paper outlines the current progress ... [more ▼]

The cost of manufacturing textile-reinforced composite aerostructures using Resin Infusion under Flexible Tooling (RIFT) can be reduced by computational modelling. This paper outlines the current progress and contributions made towards this goal. A continuum-based material model was incorporated into a finite element package to simulate the draping of a dry carbon fibre fabric. It accurately tracks the changes in the warp and weft fibre orientations and has been experimentally validated. Material characterisation was performed to determine the tensile and shear properties of a plain weave fabric reinforcement material. In support of bias extension shear testing, an accessible Digital Image Correlation (DIC) approach was developed for accurate optical strain measurement. A relationship between permeability and shear angle was also experimentally determined using a novel permeability measurement technique. Future work is planned to combine all these aspects in an infusion model and demonstrate the complete process model. [less ▲]

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See detailContributions to transnational flood risk management in the Meuse basin
Dewals, Benjamin ULg; Erpicum, Sébastien ULg; Archambeau, Pierre ULg et al

in European Symposium on Flood Frequency Estimation and Implications for Risk Management (2014, March)

Experience in transboundary river basins emphasizes the need for more cooperative transnational water management. In this respect, the Interreg IVB project AMICE aims at developing a shared adaptation ... [more ▼]

Experience in transboundary river basins emphasizes the need for more cooperative transnational water management. In this respect, the Interreg IVB project AMICE aims at developing a shared adaptation strategy of the basin of the river Meuse to the hydrological impacts of climate change. The basin covers parts of France, Belgium, Germany and the Netherlands. The project combines scientific research with innovative natural and structural water retention measures, as well as enhanced transnational crisis management. In this framework, common climate and hydrological scenarios were derived for the time horizons 2021-2050 and 2071-2100. A “coordinated” procedure was set up to conduct the first hydraulic modelling of the entire river Meuse, from its spring to its mouth. For the considered climate scenarios, the increases in future flood levels were found about twice higher in the central part of the Meuse basin compared to the upper and lower parts. This distinctive spatial pattern results from the morphology of the valley. The characteristics of the hydraulic models used for this “coordinated” analysis differed significantly from one region to the other (e.g., 1D vs. 2D, steady vs. unsteady). Therefore, a more refined analysis was undertaken on a 100 km long stretch of the Meuse, crossing the border between Belgium and the Netherlands, using very similar (“harmonized”) models for the whole computation (2D unsteady models). As a result, the influence of using different interconnected models could be appreciated. The results of hydraulic modelling were used to conduct damage assessment based on a common methodology throughout the Meuse basin and combined with landuse change scenarios in the floodplains (change in vulnerability of the floodplains). In turn, several adaptation measures were tested, including upstream water retention, dredging as well as upgrade of flood defences and mobile weirs. Hydrological and hydraulic modelling was also performed for a sub-basin of the river Meuse, partly controlled by two large reservoirs. A detailed model of the operation rules of these reservoirs was implemented. This enabled to investigate the impact of the considered climate change scenarios on the performance of these multi-purpose reservoirs as well as to investigate possible enhancements in the operation rules, which may serve as adaptation measures to compensate for the detrimental effects of climate change. [less ▲]

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See detailIl contributo della ricerca: i primi dati e le prospettive per la pratica
De Palo, Francesca; Sala, Alessia; Miscioscia, Marina ULg

Conference (2011, February 25)

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See detailContributor to Small Animal Ophthalmology, 4th Edition - A Problem-Oriented Approach (DVD)
Monclin, Sébastien ULg

in R.L. Peiffer; S.M. Petersen-Jones (Eds.) Small Animal Ophthalmology, 4th Edition - A Problem-Oriented Approach (2009)

Detailed reference viewed: 13 (1 ULg)
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See detailContributor to the Wonca Dictionary of General/Family Practice
Jamoulle, Marc ULg

in Bentzen, Niels (Ed.) Wonca Dictionary of General/Family Practice (2003)

Detailed reference viewed: 9 (1 ULg)
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See detailContro la pastasciutta : Marinetti’s Futurist Lunch
Delville, Michel ULg

in Intervalles (2007), 2

Detailed reference viewed: 34 (2 ULg)
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See detailControl and simulation of doubly fed induction generator for variable speed wind turbine systems based on an integrated finite element approach
Chen, Qiongzhong ULg; Defourny, Michel; Bruls, Olivier ULg

in Proceedings of the European Wind Energy Conference and Exhibition 2011 (EWEA 2011) (2011, March)

Regarding renewable energy and environment- friendly issues, wind energy nowadays has become the fastest-growing energy source in the world, and thus attracts a lot of research interest in the wind ... [more ▼]

Regarding renewable energy and environment- friendly issues, wind energy nowadays has become the fastest-growing energy source in the world, and thus attracts a lot of research interest in the wind turbine generation system. A doubly fed induction generator (DFIG) is used for variable speed operation in a wind turbine system to extract more power. Following a systematic approach, this paper investigates on the modelling and simulation of wind turbine generating systems using the flexible multibody simulation software SAMCEF/MECANO [1]. The objective of this work is to analyze the control-generator-structure interactions in a wind turbine system. Firstly, an extension of the finite element method is integrated into the flexible multibody dynamics solver, and thus extends the solver to represent mechatronic systems in a strongly-coupled way. Secondly, DFIG and the control systems are modularly modeled for the wind turbine package. Control of DFIG for grid synchronization and power optimization are elaborated in detail, and the methods are validated through a 2MW DFIG wind turbine prototype model. At the end, a systematic system model of wind turbine structure connected with the DFIG generating system is presented, which provides the dynamic analysis for the whole system in an overall range. [less ▲]

Detailed reference viewed: 172 (13 ULg)
See detailControl and Voting Power in Complex Shareholding Networks
Crama, Yves ULg; Leruth, Luc ULg; Su Wang

Conference (2011, June)

Detailed reference viewed: 38 (3 ULg)
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See detailControl and voting power in corporate networks: Concepts and computational aspects
Crama, Yves ULg; Leruth, Luc ULg

in European Journal of Operational Research (2007), 178(3), 879-893

This paper proposes to rely on power indices to measure the amount of control held by individual shareholders in corporate networks. The value of the indices is determined by a complex voting game viewed ... [more ▼]

This paper proposes to rely on power indices to measure the amount of control held by individual shareholders in corporate networks. The value of the indices is determined by a complex voting game viewed as the composition of interlocked weighted majority games; the compound game reflects the structure of shareholdings. The paper describes an integrated algorithmic approach which allows to deal efficiently with the complexity of computing power indices in shareholding networks, irrespective of their size or structure. In particular, the approach explicitly accounts for the presence of float and of cyclic shareholding relationships. It has been successfully applied to the analysis of real-world financial networks. (c) 2006 Elsevier B.V. All rights reserved. [less ▲]

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See detailControl and Voting Power in Shareholding Networks
Crama, Yves ULg

Conference (2010, March 18)

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See detailControl Charts monitoring product’s loss to society
Celano, Giovanni; Faraz, Alireza ULg; Saniga, Erwin

in Quality and Reliability Engineering International (2013)

Taguchi introduced a new philosophy in quality control that accounts for the economic loss associated to process variation measured by deviations from the target value of a product quality characteristic ... [more ▼]

Taguchi introduced a new philosophy in quality control that accounts for the economic loss associated to process variation measured by deviations from the target value of a product quality characteristic. The Taguchi loss function has been considered in the design of control charts only for the computation of costs associated with nonconformities. This paper considers sample statistics based on the Taguchi loss function as a means to implement Shewhart control charts monitoring both the deviation from the target and dispersion of normally distributed quality characteristics. The aim of this proposed control chart is to perform on-line quality control of a process by monitoring its quality loss cost performance over time. To compute the quality loss performance, we consider a nominal-the-best quality characteristic. The statistical performance of the proposed control charts has been evaluated and compared with that of widely used control charts. Implementing target costing philosophy by means of one of the proposed charts is also discussed. An example illustrates the Taguchi control chart in a practical implementation. [less ▲]

Detailed reference viewed: 51 (25 ULg)
See detailControl Engineering Challenges in Systems and Synthetic Biology
Bullinger, Eric ULg

Scientific conference (2010, March 19)

Detailed reference viewed: 15 (0 ULg)
See detailControl Engineering in Systems Biology
Bullinger, Eric ULg

Scientific conference (2004, July 08)

Detailed reference viewed: 3 (0 ULg)
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See detailControl in a dissipative environment: the example of a Cope rearrangement
Chenel, Aurélie; Dive, Georges ULg; Meier, Christopher et al

in Journal of Physical Chemistry A (2012), 116

Detailed reference viewed: 14 (2 ULg)
See detailControl in Biological Systems - from Intercellular Signalling to the Organism
Bullinger, Eric ULg

Scientific conference (2011, September 16)

Detailed reference viewed: 11 (0 ULg)