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See detailA Methodology for Sampling Design dedicated to the Evaluation of Effects of Soil Type and Land Use on the Fate of Metallic Trace Elements in Contaminated Soils
Liénard, Amandine ULg; Bock, Laurent ULg; Colinet, Gilles ULg

Poster (2011, July 04)

Contaminated soils may present a risk to human health and the environment. The aim of this study is to evaluate the fate of metallic trace elements (Cd, Pb and Zn) brought to soils from atmospheric ... [more ▼]

Contaminated soils may present a risk to human health and the environment. The aim of this study is to evaluate the fate of metallic trace elements (Cd, Pb and Zn) brought to soils from atmospheric fallouts according to soil type and land use. We have developed a sampling soil strategy in order to both map soil contaminations and assess the effects of soils and land use on the mobility of MTE. [less ▲]

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See detailMethodology for Satellite Formation-Keeping in the Presence of System Uncertainties
Udwadia, Firdaus; Wanichanon, Thanapat; Cho, Hancheol ULg

in Journal of Guidance Control and Dynamics (2014), 37(5), 1611-1624

A two-step formation-keeping control methodology is proposed that includes both attitude and orbital control requirements in the presence of uncertainties. Based on a nominal system model that provides ... [more ▼]

A two-step formation-keeping control methodology is proposed that includes both attitude and orbital control requirements in the presence of uncertainties. Based on a nominal system model that provides the best assessment of the real-life uncertain environment, a nonlinear controller that satisfies the required attitude and orbital requirements is first developed. This controller allows the nonlinear nominal system to exactly track the desired attitude and orbital requirements without making any linearizations/approximations. In the second step, a new additional set of closed-form additive continuous controllers is developed. These continuous controllers compensate for uncertainties in the physical model of the satellite and in the forces to which it may be subjected. They obviate the problem of chattering. The desired trajectory of the nominal system is used as the tracking signal, and these controllers are based on a generalization of the concept of sliding surfaces. Error bounds on tracking due to the presence of uncertainties are analytically obtained. The resulting closed-form methodology permits the desired attitude and orbital requirements of the nominal system to be met within user-specified bounds in the presence of unknown, but bounded, uncertainties. Numerical results are provided, showing the simplicity and efficacy of the control methodology, and the reliability of the analytically obtained error bounds. [less ▲]

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See detailA Methodology for The Appropriation And The Isolation of Nodal Diameter Modes in Cyclic Symmetric Structures
Nyssen, Florence ULg; Viguié, Régis; Simon, Daniel et al

in Proceedings of ASME 2013 International Design Engineering Technical Conference & Computers and Information in Engineering Conference IDETC/CIE 2013 (2013, August)

This paper presents a methodology enabling the appropriation and the isolation of a chosen nodal diameter modes in cyclic symmetric structures. In particular, a study about the minimum number and the ... [more ▼]

This paper presents a methodology enabling the appropriation and the isolation of a chosen nodal diameter modes in cyclic symmetric structures. In particular, a study about the minimum number and the optimized location of the excitation sources required in laboratory conditions to isolate a specific nodal diameter mode is conducted. This work includes a theoretical approach based on energy concepts. It is followed by the numerical and experimental validations on a stator stage of an axial compressor. The concept of modal appropriation is investigated here as the first step of the calibration procedure before engine tests. [less ▲]

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See detailA METHODOLOGY FOR THE CALCULATION OF POLLUTANT LOADS IN AN ESTUARY - APPLICATION TO THE WESTERN ESCAUT ESTUARY
Ronday, François ULg; Mouchet, Anne ULg

in Nival, P; Saliot, A (Eds.) FATE OF CHEMICAL POLLUTANTS (1992)

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See detailMethodology for the characterization of the microstructure of nanocomposite polymeric foams using X-ray microtomography
Plougonven, Erwan ULg; Marchot, Pierre ULg; Detrembleur, Christophe ULg et al

in Micro-CT User Meeting Abstract Book (2011, April 13)

Polymeric foams used in electromagnetic shielding applications are characterized using X-ray microtomography. These foams contain a conductive nanometric reinforcement, carbon nanotubes, but the scale of ... [more ▼]

Polymeric foams used in electromagnetic shielding applications are characterized using X-ray microtomography. These foams contain a conductive nanometric reinforcement, carbon nanotubes, but the scale of characterization described here is that of the microscopic cells. Although nanotube dispersion is important for the final properties of the material, the structure and distribution of the porosity also play a role in terms of dielectric constant and conductivity. Unfortunately, cell wall thinness and limited resolution of laboratory microtomographs makes poper cell identification difficult. Therefore we present a new statistical method based on the 3D autocorrelation function, that allows to some extent to measure mean cell size and structure anisotropy. [less ▲]

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See detailMethodology for the development of a transportation plan
Marchal, Jean ULg

Learning material (1995)

Detailed reference viewed: 29 (0 ULg)
See detailMethodology for the development of a transportation plan.
Marchal, Jean ULg

Learning material (1994)

Detailed reference viewed: 11 (1 ULg)
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See detailMethodology for the elaboration of Natura 2000 sites designation acts in Wallon egion (Belgium): calcareous grasslands in the Lesse and Lomme area.
Bottin, G.; Etienne, M.; Verté, P. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2005), 9

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See detailMethodology for the evaluation of the quality of data in a Belgian risk assessment for Salmonella in pigs
Boone, Ides; Van der Stede, Yves; Bollaerts, Kaatje et al

Poster (2007, May)

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See detailMethodology for the integration of process studies and development of a decision support tool (FRAC-WECO Project Deliverable D1.2)
Brouyère, Serge ULg; Hérivaux, Cécile; Haberman, Michaël et al

Report (2007)

This deliverable allows one to clarify the objectives of the different partners involved in the FRAC-WECO project and how they are going to interact, to exchange data, research results and knowledge in ... [more ▼]

This deliverable allows one to clarify the objectives of the different partners involved in the FRAC-WECO project and how they are going to interact, to exchange data, research results and knowledge in order to meet the ambitious objectives of the project. Particularly, the complex interactions between researches dealing with physical processes and with socio-economic aspects have been described in details. The modelling applications will constitute the key interacting tools as they are going to integrate all the information on water and contaminant mass fluxes and on biogeochemical processes affecting the fate of contaminant in the field and they are also going to be used to produce all data required for risk assessment and for the socio-economic analysis which are two of the most important expected outcomes of the project. The deliverable also clarifies the use of flux-based concepts through the definition of risk assessment indicators in the form of contaminant mass fluxes and discharge at the various considered receptors. Finally, this document has also allowed one to clarify the scope and the limits of the researches foreseen in the FRAC-WECO project that will focus on the risk of contaminant leaching to groundwater, of contaminant dispersion through groundwater and on the impact of contaminant on groundwater and surface water as affected by groundwater discharge and on the impact on aquatic ecosystems. [less ▲]

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See detailMethodology for the Validation of Analytical Methods involved in Uniformity of Dosage Units tests
Rozet, Eric ULg; Ziemons, Eric ULg; Marini Djang'Eing'A, Roland ULg et al

in Analytica Chimica Acta (2013), 760

Validation of analytical methods is required prior to their routine use. In addition, the current implementation of the Quality by Design (QbD) framework in the pharmaceutical industries aims at improving ... [more ▼]

Validation of analytical methods is required prior to their routine use. In addition, the current implementation of the Quality by Design (QbD) framework in the pharmaceutical industries aims at improving the quality of the end products starting from its early design stage. However, no regulatory guideline or none of the published methodologies to assess method validation propose decision methodologies that effectively take into account the final purpose of developed analytical methods. In this work a solution is proposed for the specific case of validating analytical methods involved in the assessment of the Content Uniformity or Uniformity of Dosage Units of a batch of pharmaceutical drug products as proposed in the European or US pharmacopoeias. This methodology uses statistical tolerance intervals as decision tools. Moreover it adequately defines the Analytical Target Profile of analytical methods in order to obtain analytical methods that allow to make correct decisions about Content Uniformity or Uniformity of Dosage Units with high probability. The applicability of the proposed methodology is further illustrated using an HPLC-UV assay as well as a Near Infra-Red Spectrophotometric method. [less ▲]

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See detailA Methodology for Updating Large Scale Ortho-Photomaps by Means of VHR Satellite imagery
Donnay, Jean-Paul ULg; Seba, Gautier; de Béthune, Stanislas et al

in Maktav, Derya; Jürgens, Carsten; Erber Sunar, Filiz (Eds.) et al Proceedings of the 3d International Symposium of Remote Sensing of Urban Areas (2002)

Some authorities (DGPL) of the Walloon Region (Belgium) are involved in the realization of a complete regional coverage (16,844 km²) of natural colour ortho-photomap to be used at large scales (up to 1 ... [more ▼]

Some authorities (DGPL) of the Walloon Region (Belgium) are involved in the realization of a complete regional coverage (16,844 km²) of natural colour ortho-photomap to be used at large scales (up to 1:4000). These are made of very high-resolution digital ortho-rectified aerial photos presented as raster files. Those rasters are grouped by corresponding administrative boundaries and distributed to the local authorities in order to be used for various land and urban planning purposes. One goal of the DGPL is to provide the local administrations with up to date image data, within the limits of some obvious financial constraints. Because significant changes in the landscape appear at different rates over the time and space, it was suggested to devise a methodology to find out these changes would require a rapid update of the imagery. In regard to this situation, a pilot project has been set up in the year 2000 aiming at detecting the location, the extent and the nature of landscape changes in contrasted areas - urban, suburban, rural - from adequately processed very high resolution (VHR) satellite images - typically Ikonos multi-spectral (4m) and panchromatic (1m) images. Hence, this project had to cope with various issues related to multi-source analysis, geometric and radiometric aspects of the processing VHR data, diachronic analysis, in order to provide the administration with the basic knowledge and the appropriate tools to carry out the proposed task. This communication presents the proposed operational methodology for change detection including all processing steps from the digital image processing (image fusion technique, ortho-rectification analysis, change detection schemes). Along the way it also introduces an assessment of the possible complementarities and convergence of VHR satellite imagery and aerial photography. [less ▲]

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See detailMethodology manual for European Association for Cardio-Thoracic Surgery (EACTS) clinical guidelines.
Sousa-Uva, Miguel; Head, Stuart J.; Thielmann, Matthias et al

in European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery (2015), 48(6), 809-16

The goal of all clinical guidelines is to assist patients and practitioners in making healthcare decisions. However, clinical guidelines have been questioned about their quality, transparency and ... [more ▼]

The goal of all clinical guidelines is to assist patients and practitioners in making healthcare decisions. However, clinical guidelines have been questioned about their quality, transparency and independence. Based on the revision of manuals by other scientific cardiothoracic organizations, this document provides instructions for the development of European Association for Cardio-Thoracic Surgery (EACTS) clinical guidelines and other types of evidence-based documents. Four key areas have been addressed: (i) selection of taskforce members and transparency of relations with the industry, (ii) methods for critical appraisal of medical evidence, (iii) rules for writing recommendations and (iv) review process. It is hoped that, by adopting this methodology, clinical guidelines produced by the EACTS will be well balanced, objective and, importantly, trusted by physicians and patients who benefit from their implementation. [less ▲]

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See detailMETHODOLOGY OF ANNOTATING VIDEOS AND STILL IMAGES AND DEVELOPMENT OF THE SOFTWARE COVER
Guillaumont, Brigitte; Carré, Cyril ULg; van den Beld, Inge et al

Conference (2011, June)

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See detailMethodology of Comparative Law
Gerkens, Jean-François ULg

Scientific conference (2014, November)

Detailed reference viewed: 27 (3 ULg)
Peer Reviewed
See detailMethodology of high speed railway network planning
Marchal, Jean ULg; Han, Baoming

in Proceedings of the Second Conference of Hongkong Society for Transportation Studies HKSTS (1997)

Detailed reference viewed: 11 (1 ULg)