Publications ORBi OA
Bookmark and Share    
Full Text
See detailMonitoring an Odour in the Environment with an Electronic Nose: Requirements for the Signal Processing
Romain, Anne-Claude ULg; Nicolas, Jacques ULg

in Gutierrez, Agustin; Marco, S. (Eds.) Biologically Inspired Signal Processing for Chemical Sensing (2009)

Artificial olfaction system (the so-called electronic nose) is a very promising tool to monitor the malodour in the field. Usual odour measurement techniques use human olfaction or analytical techniques ... [more ▼]

Artificial olfaction system (the so-called electronic nose) is a very promising tool to monitor the malodour in the field. Usual odour measurement techniques use human olfaction or analytical techniques. The first category represents the real odour perception but is not applicable to measure in continuous bad odours in the field. The second class of techniques gives the composition of the mixture but not the global information representative of the odour perception. The e-nose has the potentialities to combine “the odour perception” and the “monitoring in the field”. However to be able to reach this goal, the signal processing has to be adapted to work in complex environment. We have more than teen years experiments in the measure of environmental malodours in the field and the paper presents the minimal requirements that we consider essential for artificial olfaction system to become successful for this application. [less ▲]

Detailed reference viewed: 130 (60 ULg)
Full Text
See detailLa jurisprudence de la Cour au prisme de la science économique
Sibony, Anne-Lise ULg

in Mbongo, Pascal; Vauchez, Antoine (Eds.) Dans la fabrique du droit européen : Scènes, acteurs et publics de la Cour de justice des Communautés européennes (2009)

The European Court of justice has long been aware of economists watching its judgements, particularly in the field of European Competition Law. This article considers first what exactly economists are ... [more ▼]

The European Court of justice has long been aware of economists watching its judgements, particularly in the field of European Competition Law. This article considers first what exactly economists are looking at when they read the case law. Then, the typical content of their observation is analysed. Finally, the analysis turns to how the Court takes into account economist's view point on the case law. [less ▲]

Detailed reference viewed: 134 (6 ULg)
Full Text
See detailENMG expliquée aux experts
WANG, François-Charles ULg

Conference (2009)

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailCas clinique
WANG, François-Charles ULg

Conference (2009)

Detailed reference viewed: 9 (1 ULg)
Full Text
See detailAlgebraic approach to modal extensions of Łukasiewicz logics
Teheux, Bruno ULg

Doctoral thesis (2009)

Detailed reference viewed: 124 (8 ULg)
Full Text
Peer Reviewed
See detailEnseigne-t-on mieux les langues étrangères
Defays, Jean-Marc ULg

in Synergies Roumanie (2009), 4

Detailed reference viewed: 29 (3 ULg)
Full Text
Peer Reviewed
See detailIonospheric slab thickness - Analysis, modelling and monitoring
Stankov, Stanimir; Warnant, René ULg

in Advances in Space Research (2009), 44(10), 1295-1303

Detailed reference viewed: 23 (1 ULg)
Full Text
See detail10 façons d’interpréter une PNP axonale chronique
WANG, François-Charles ULg

Conference (2009)

Detailed reference viewed: 16 (2 ULg)
Full Text
See detailPierre-Augustin Guys à Constantinople: un regard méconnu sur le Levant à la fin du XVIIIe siècle
Famerie, Etienne ULg

in Droixhe, Daniel; Collart, Muriel (Eds.) L'"Esprit des journaux": un périodique européen au XVIIIe siècle (2009)

Guys' original approach and description of the contemporaneous Greek people, breaking a new ground in favour of the philhellenic movement in the end of 18th century

Detailed reference viewed: 87 (2 ULg)
Full Text
Peer Reviewed
See detailUn bouleversement de la procédure pénale en vue : la présence de l’avocat dès l’arrestation judiciaire du suspect ?
Jacobs, Ann ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2009)

Detailed reference viewed: 92 (12 ULg)
Full Text
See detailEditorial : Les invasions biologiques ... appréhender la démesure
Vanderhoeven, Sonia ULg; Branquart, Etienne; Mahy, Grégory ULg

in Parcs & Réserves (2009), 3

Detailed reference viewed: 19 (2 ULg)
Full Text
See detailSocial Enterprise: the Shaping of a New Concept in a Comparative Regional Perspective
Defourny, Jacques ULg; Nyssens, Marthe

in Defourny, Jacques; Develtere, Patrick; Fonteneau, Bénédicte (Eds.) et al The Worldwide Making of the Social Economy. Innovations and Changes (2009)

Detailed reference viewed: 114 (3 ULg)
Full Text
Peer Reviewed
See detailClinal differentiation during invasion: Senecio inaequidens (Asteraceae) along altitudinal gradients in Europe.
Monty, Arnaud ULg; Mahy, Grégory ULg

Poster (2009)

Plant population differentiation may play a role in decreasing the ability to predict whether, where, and when an introduced species will invade. However, few studies have addressed the level of genetic ... [more ▼]

Plant population differentiation may play a role in decreasing the ability to predict whether, where, and when an introduced species will invade. However, few studies have addressed the level of genetic change an alien species may undergo during range expansion, e.g. in response to climatic variation with altitude. In the present study, we tested the hypothesis that invasive populations of Senecio inaequidens (Asteraceae) differentiated during migration from two independent introduction sites into divergent altitudinal and climatic zones. We carried out two years of common garden experiments with eight populations from a Belgian altitudinal transect and ten populations from similar French transect. Climatic analysis revealed that the Belgian transect followed a temperature and precipitation gradient. A temperature and summer drought gradient characterized the French study site. We evaluated differentiation and clinal variation in the following characters: days to germination, days to flowering, height at maturity, final plant height and aboveground biomass. Results showed that S. inaequidens populations differentiated in growth traits during invasion. First year of experiment, regressing population growth trait means against source population altitude indicated the presence of clinal variation along both transects. Second year, similar results were found along the French transect, i.e. a reduction in height at maturity, plant height and aboveground biomass with increasing altitude. Including seed mass as a covariate did not change the outcome of the analysis. The possible evolutionary causes for the differentiation observed are discussed. [less ▲]

Detailed reference viewed: 33 (3 ULg)
Full Text
See detailThe Social Economy: the Worldwide Making of a Third Sector
Defourny, Jacques ULg; Develtere, Patrick

in Defourny, Jacques; Develtere, Patrick; Fonteneau, Bénédicte (Eds.) et al The Worldwide Making of the Social Economy. Innovations and Changes (2009)

Detailed reference viewed: 393 (15 ULg)
Full Text
See detailcarnet de pédiatrie en Afrique: pédiatrie de base
Battisti, Oreste ULg

Learning material (2009)

Detailed reference viewed: 122 (38 ULg)
Full Text
See detailForeword
Defourny, Jacques ULg

in Kerlin, Janelle A. (Ed.) Social Enterprise. A Global Comparison (2009)

Detailed reference viewed: 23 (3 ULg)
Full Text
See detailcarnet de pédiatrie en Afrique: Chirurgie pédiatrique illustrée
Battisti, Oreste ULg; Battisti, Oreste ULg

Learning material (2009)

cours didactique sur la chirurgie pédiatrique

Detailed reference viewed: 131 (25 ULg)
Full Text
See detailDesigning Steel Structures for Fire Safety
Franssen, Jean-Marc ULg; Kodur, Venkatesh; Zaharia, Raul

Book published by Taylor & Françis Ed. (2009)

In this book the information relevant to fire design of steel structures is presented in a systematic way in seven chapters. Each Chapter begins with an introduction of various concepts to be covered and ... [more ▼]

In this book the information relevant to fire design of steel structures is presented in a systematic way in seven chapters. Each Chapter begins with an introduction of various concepts to be covered and follows with detailed explanation of the concepts. The calculation methods as relevant to code provisions (in Europe, North America or other continents) are discussed in detail. Worked examples relevant to calculation methodologies on simple structural elements are presented. For the case of complete structures guidance on how analysis can be carried out is presented. Chapter 1 of the book is devoted to providing relevant background information to codes and standards and principles of fire resistance design. The chapter discusses the fire safety design philosophies, prescriptive and performance-based design fire safety design issues. Chapter 2 deals with basis of design and mechanical loads. The load combinations to be considered for fire design of structures, as per European and North American codes and standards, are discussed. Chapter 3 discusses the detailed steps involved in establishing the fire scenarios for various cases. Both Eurocode and North American temperature-time relationships are discussed. Procedures in this section allow the designer to establish the time-temperature relationships or heat flux evolutions under a specified design fire. Chapter 4 deals with steps associated in establishing the temperature history in the steel structure, resulting from fire temperature. The various approaches for undertaking thermal analysis by simple calculation models are discussed. Chapter 5 presents the steps associated for establishing the mechanical response of a structure exposed to fire. The possibilities for analysis at different levels: member level, sub-structure level and global level are discussed. Full details related to simple calculation methods for undertaking strength analysis at member level are presented. Chapter 6 is devoted to fire resistance issues associated with design of joints. The steps associated with the fire resistance of a bolted or a welded joint through simplified and detailed procedure are discussed. Chapter 7 deals with thermal and mechanical analysis through advanced calculation models. The procedures involved in the sub-structure analysis or global structural analysis under fire exposure is fully discussed. Case studies are presented to illustrate the detailed fire resistance analysis of various structures. Chapter 8 presents four design examples showing how a complex structure can be designed using the concept of element or sub-structure analysis. The book concludes with two Annexes which present some of the design information related to material properties and temperature profiles. Annex 1 focuses on thermal properties of structural steel and commonly used insulation materials and resulting temperature profiles in steel. Annex 2 focuses on mechanical properties of structural steel. [less ▲]

Detailed reference viewed: 272 (7 ULg)
Full Text
Peer Reviewed
See detailDynamically constrained ensemble perturbations - application to tides on the West Florida Shelf
Barth, Alexander ULg; Alvera Azcarate, Aïda ULg; Beckers, Jean-Marie ULg et al

in Ocean Science (2009), 5(3), 259-270

A method is presented to create an ensemble of perturbations that satisfies linear dynamical constraints. A cost function is formulated defining the probability of each perturbation. It is shown that the ... [more ▼]

A method is presented to create an ensemble of perturbations that satisfies linear dynamical constraints. A cost function is formulated defining the probability of each perturbation. It is shown that the perturbations created with this approach take the land-sea mask into account in a similar way as variational analysis techniques. The impact of the land-sea mask is illustrated with an idealized configuration of a barrier island. Perturbations with a spatially variable correlation length can be also created by this approach. The method is applied to a realistic configuration of the West Florida Shelf to create perturbations of the M2 tidal parameters for elevation and depth-averaged currents. The perturbations are weakly constrained to satisfy the linear shallow-water equations. Despite that the constraint is derived from an idealized assumption, it is shown that this approach is applicable to a non-linear and baroclinic model. The amplitude of spurious transient motions created by constrained perturbations of initial and boundary conditions is significantly lower compared to perturbing the variables independently or to using only the momentum equation to compute the velocity perturbations from the elevation. [less ▲]

Detailed reference viewed: 54 (15 ULg)
Full Text
Peer Reviewed
See detailEstimation de la transparence de l'atmosphère par ciel clair à la Station Scientifique des Hautes-fagnes (SSHF), Mont Rigi, Belgique. Comparaison avec la Station d'Uccle-Bruxelles (IRM)
Dury, Marie ULg; Ginion, Serge; Erpicum, Michel ULg

in Bulletin de la Société Géographique de Liège (2009), 51(2008), 5-16

This paper deals with the study of the transparency of the atmosphere on clear sky at the Mont Rigi (Belgian Hautes-Fagnes) with the aim of underlining the particularities of the air composition in the ... [more ▼]

This paper deals with the study of the transparency of the atmosphere on clear sky at the Mont Rigi (Belgian Hautes-Fagnes) with the aim of underlining the particularities of the air composition in the Hautes-Fagnes region and quantifying its influence on global solar radiation. We used the following data: solar elevation, water vapor content (characterized by atmospheric water depth) and solar extraterrestrial irradiation at the top of the atmosphere. Due to a lack of direct information about atmospheric pollution, we compared global radiation received at the Hautes-Fagnes scientific station (SSHF) on clear sky with that stored in the same conditions in Uccle (Brussels), the Belgian reference station (Royal meteorological institute, RMI) and urban area. [less ▲]

Detailed reference viewed: 86 (15 ULg)