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See detailThe evolution of the Fair Trade organisational landscape in France and in Belgium
Huybrechts, Benjamin ULg

Conference (2008, May 14)

Parallel to the dramatic growth of its sales and public awareness, the Fair Trade movement has seen its organisational landscape become increasingly diversified. While Fair Trade nonprofit pioneers were ... [more ▼]

Parallel to the dramatic growth of its sales and public awareness, the Fair Trade movement has seen its organisational landscape become increasingly diversified. While Fair Trade nonprofit pioneers were initially relatively homogeneous in terms of goals and structures, the economic development of the initiative, driven by the sales of Fair Trade products in mainstream distribution channels, has led to the emergence of a multitude of new actors with much more heterogeneous behaviours – in spite of the general trend towards a stronger market orientation – (Gendron, 2004; Moore, 2004; Nicholls & Opal, 2005; Renard, 2003). When observing the evolution of Fair Trade organisations (FTOs), i.e., organisations claiming to be totally dedicated to Fair Trade, three trends can be observed: Fair Trade pioneers have adopted more business-oriented profiles and more complex and specialised organisational structures; New small Fair Trade businesses have emerged with a stronger economic specialisation on a particular product or distribution channel ; « Old » and « new » FTOs increasingly gather into networks with two types of purposes: to promote Fair Trade and to have a minimum political representation (advocacy networks) and to face common socio-economic challenges (socio-economic networks). The goal of this contribution is to analyse these three trends with the help of a sample of nearly fourty FTOs in Belgium and in the French Rhône-Alpes region. We can thus illustrate the three trends on the basis of both general observations and precise examples. We also try to compare the two regions and to explore to what extent the evolution of FTOs reveals more global trends within the Fair Trade movement. [less ▲]

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See detailEvaluation des stages d'enseignement de l'AESS/du Master à finalité didactique en Langues et littératures modernes à l'ULg
Simons, Germain ULg

Conference (2008, May 09)

Dans cette communication, nous présentons quelques démarches que nous avons entreprises ces dernières années pour rendre l'évaluation des stages d'enseignement à l'AESS en Langues et littératures modernes ... [more ▼]

Dans cette communication, nous présentons quelques démarches que nous avons entreprises ces dernières années pour rendre l'évaluation des stages d'enseignement à l'AESS en Langues et littératures modernes à l'ULg plus transparente, cohérente et objective. Nous décrivons aussi brièvement les grandes étapes de l'autoscopie (vidéo-évaluation) que nous pratiquons, ponctuellement, avec certains étudiants. [less ▲]

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See detailAdvanced Driver Assistance Systems – Market Situation and Prospects in Development
Christen, Fréderic ULg

Scientific conference (2008, May 08)

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See detailBibliothèques électroniques : La révolution lente
Thirion, Paul ULg

Conference given outside the academic context (2008)

Les dernières décennies ont vu le numérique frapper de plein fouet la bibliothèque, habituée depuis des siècles à l'hégémonie absolue du papier. Cette véritable révolution "post gutenbergienne" transforme ... [more ▼]

Les dernières décennies ont vu le numérique frapper de plein fouet la bibliothèque, habituée depuis des siècles à l'hégémonie absolue du papier. Cette véritable révolution "post gutenbergienne" transforme en profondeur ses fonctions et ses relations avec ses usagers. Son rôle de "passeur de savoir" ne se limite plus à la conservation et à la diffusion, fût-elle électronique, de celui-ci. La bibliothèque scientifique intervient désormais directement et activement dans la sphère de la production de l'information. Cependant, pour de multiples raisons impliquant l'ensemble des acteurs, l'éclosion de cette bibliothèque virtuelle est beaucoup moins instantanée que ce que d'aucuns prédisaient [less ▲]

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See detailOvarian cysts in the cow.
Hanzen, Christian ULg

Conference (2008, May 08)

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See detailValidation of ACE-FTS v2.2 methane profiles from the upper troposphere to the lower mesosphere
De Mazière, Martine; Vigouroux, Corinne; Bernath, Peter et al

in Atmospheric Chemistry and Physics (2008), 9(9), 2421-2435

The ACE-FTS (Atmospheric Chemistry Experiment – Fourier Transform Spectrometer) solar occultation instrument that was launched onboard the Canadian SCISAT-1 satellite in August 2003 is measuring vertical ... [more ▼]

The ACE-FTS (Atmospheric Chemistry Experiment – Fourier Transform Spectrometer) solar occultation instrument that was launched onboard the Canadian SCISAT-1 satellite in August 2003 is measuring vertical profiles from the upper troposphere to the lower mesosphere for a large number of atmospheric constituents. Methane is one of the key species. The version v2.2 data of the ACE-FTS CH4 data have been compared to correlative satellite, balloon-borne and ground-based Fourier transform infrared remote sensing data to assess their quality. The comparison results indicate that the accuracy of the data is within 10% in the upper troposphere – lower stratosphere, and within 25% in the middle and higher stratosphere up to the lower mesosphere (<60 km). The observed differences are generally consistent with reported systematic uncertainties. ACE-FTS is also shown to reproduce the variability of methane in the stratosphere and lower mesosphere. [less ▲]

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See detailDétection et caractérisation de peptides obliques au sein de protéines amyloïdogéniques
Crowet, Jean-Marc ULg

Doctoral thesis (2008)

The study of amyloidogenic proteins is of interest in biochemistry because these proteins undergo conformational changes and aggregation. Both processes are largely implicated in several diseases ... [more ▼]

The study of amyloidogenic proteins is of interest in biochemistry because these proteins undergo conformational changes and aggregation. Both processes are largely implicated in several diseases including Alzheimer’s, Parkinson’s or Creutzfeldt-Jakob’s disease. These phenomena are not completely understood, either at a structural or energetical point of view. Tilted peptides are short protein fragment (11 to 19 residues) that adopt a tilted orientation when inserted into biological membranes and destabilise them. Recently, tilted peptides have been detected in two amyloidogenic proteins involved in neurodegenerative diseases; the amyloid β peptide responsible for Alzheimer’s disease, and the PrP protein that causes Creutzfeldt-Jakob’s disease. Tilted peptides could be responsible for the neurotoxic effects of these proteins. Due to their destabilising properties, they could interact directly with the membrane leading to cell death. Tilted peptides could also be involved in the transconformational process of the proteins. The aim of this work is to detect tilted fragments in other amyloidogenic proteins by molecular modelling and to study some of these peptides experimentally to evidence their lipid destabilizing properties, their structure and their toxicity. In addition, this work enable the design of an automatic method of detection for tilted peptides. Twenty-two tilted peptides from 18 different proteins have been detected among 53 amyloidogenic proteins and 7 peptides were tested experimentally. The results support the hypothesis that some tilted peptides could be involved in transconformational processes and/or cytotoxicity related to amyloidogenic proteins. [less ▲]

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See detailDu « Prof de gym » au « Prof d’éducation physique »
Cloes, Marc ULg

Conference given outside the academic context (2008)

La problématique récurrente, c'est la manque d'activité physique chez les jeunes. Une réflexion s'impose en collaboration avec les décideurs politiques, les responsables du sport et de l'éducation pour ... [more ▼]

La problématique récurrente, c'est la manque d'activité physique chez les jeunes. Une réflexion s'impose en collaboration avec les décideurs politiques, les responsables du sport et de l'éducation pour favoriser un style de vie plus actif et ainsi démontrer que l'activité physique, dont fait partie le sport, et la santé sont intimement liés. L'exposé est divisé en deux parties: (1) Jeu de questions/réponses avec quatre témoins privilégiés ayant tous plus de ving années d'expérience et qui travaillent dans des contextes très différents (niveau d'enseignement, réseau, types de populations différentes, quartiers populaires, écoles à discrimination positive); (2) Court exposé plus théorique. [less ▲]

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See detailDas Wildschwein und die geheimnisvolle Insel
Gerkens, Jean-François ULg

Scientific conference (2008, May 06)

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See detailLa régénération des friches industrielles à Liège et à Sheffield
Guilliams, P.; Halleux, Jean-Marie ULg

Conference (2008, May 06)

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See detailL'astronomie dans le monde
Manfroid, Jean ULg

Article for general public (2008)

Rayons cosmiques exceptionnels; Un GRB record; Cassini frôle Encelade; Exoplanètes en transit; Une naine brune très froide; Trou noir intermédiaire; Aminoacétonitrile interstellaire; Aspects cachés de ... [more ▼]

Rayons cosmiques exceptionnels; Un GRB record; Cassini frôle Encelade; Exoplanètes en transit; Une naine brune très froide; Trou noir intermédiaire; Aminoacétonitrile interstellaire; Aspects cachés de Jupiter; N132D; [less ▲]

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See detailTransiting exoplanets from the CoRoT space mission. I. CoRoT-Exo-1b: a low-density short-period planet around a G0V star
Barge, P.; Baglin, A.; Auvergne, M. et al

in Astronomy and Astrophysics (2008), 482

Context: The pioneer space mission for photometric planet searches, CoRoT, steadily monitors about 12 000 stars in each of its fields of view. Transit candidates can be detected early in the processing of ... [more ▼]

Context: The pioneer space mission for photometric planet searches, CoRoT, steadily monitors about 12 000 stars in each of its fields of view. Transit candidates can be detected early in the processing of the data and before the end of a run of observation. Aims: We report the detection of the first planet discovered by CoRoT and characterizing it with the help of follow-up observations. Methods: Raw data were filtered from outliers and residuals at the orbital period of the satellite. The orbital parameters and the radius of the planet were estimated by best fitting the phase folded light curve with 34 successive transits. Doppler measurements with the SOPHIE spectrograph permitted us to secure the detection against binaries and to estimate the mass of the planet. Results: The accuracy of the data is very high with a dispersion in the 2.17 min binned phase-folded light curve that does not exceed ~3.×10[SUP]-4[/SUP] in flux unit. The planet orbits a mildly metal-poor G0V star of magnitude V=13.6 in 1.5 days. The estimated mass and radius of the star are 0.95±0.15 M[SUB]o[/SUB] and 1.11±0.05 R[SUB]o[/SUB]. We find the planet has a radius of 1.49±0.08 R_Jup, a mass of 1.03±0.12 M_Jup, and a particularly low mean density of 0.38±0.05 g cm[SUP]-3[/SUP]. The CoRoT space mission, launched on Dec. 27th, 2006, was developed and is operated by the CNES, with participation of the Science Program of ESA, ESTEC/RSSD, Austria, Belgium, Brazil, Germany and Spain. Based in part on observations with the SOPHIE spectrograph at Obs. de Haute Provence, France. Table [see full text] is only available in electronic form at http://www.aanda.org Individual photometric measurements are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/482/L17 [less ▲]

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See detailTransiting exoplanets from the CoRoT space mission. II. CoRoT-Exo-2b: a transiting planet around an active G star
Alonso, R.; Auvergne, M.; Baglin, A. et al

in Astronomy and Astrophysics (2008), 482

Context: The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations of ~12 000 stars in the galactic plane. An analysis of the raw data ... [more ▼]

Context: The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations of ~12 000 stars in the galactic plane. An analysis of the raw data identifies the most promising candidates and triggers the ground-based follow-up. Aims: We report on the discovery of the transiting planet CoRoT-Exo-2b, with a period of 1.743 days, and characterize its main parameters. Methods: We filter the CoRoT raw light curve of cosmic impacts, orbital residuals, and low frequency signals from the star. The folded light curve of 78 transits is fitted to a model to obtain the main parameters. Radial velocity data obtained with the SOPHIE, CORALIE and HARPS spectrographs are combined to characterize the system. The 2.5 min binned phase-folded light curve is affected by the effect of sucessive occultations of stellar active regions by the planet, and the dispersion in the out of transit part reaches a level of 1.09×10[SUP]-4[/SUP] in flux units. Results: We derive a radius for the planet of 1.465 ± 0.029 R_Jup and a mass of 3.31 ± 0.16 M_Jup, corresponding to a density of 1.31 ± 0.04 g/cm^3. The large radius of CoRoT-Exo-2b cannot be explained by current models of evolution of irradiated planets. Based on observations obtained with CoRoT, a space project operated by the French Space Agency, CNES, with participation of the Science Programme of ESA, ESTEC/RSSD, Austria, Belgium, Brazil, Germany and Spain; and on observations made with SOPHIE spectrograph at Observatoire de Haute Provence, France (PNP.07 A.MOUT), CORALIE, and HARPS spectrograph at ESO La Silla Observatroy (079.C-0127/F)). Table 2 is only available in electronic form at http://www.aanda.org [less ▲]

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See detailTransiting exoplanets from the CoRoT space mission. III. The spectroscopic transit of CoRoT-Exo-2b with SOPHIE and HARPS
Bouchy, F.; Queloz, D.; Deleuil, M. et al

in Astronomy and Astrophysics (2008), 482

We report on the spectroscopic transit of the massive hot-Jupiter CoRoT-Exo-2b observed with the high-precision spectrographs SOPHIE and HARPS. By modeling the radial velocity anomaly occurring during the ... [more ▼]

We report on the spectroscopic transit of the massive hot-Jupiter CoRoT-Exo-2b observed with the high-precision spectrographs SOPHIE and HARPS. By modeling the radial velocity anomaly occurring during the transit due to the Rossiter-McLaughlin (RM) effect, we determine the sky-projected angle between the stellar spin and the planetary orbital axis to be close to zero lambda = 7.2 ± 4.5 deg, and we secure the planetary nature of CoRoT-Exo-2b. We discuss the influence of the stellar activity on the RM modeling. Spectral analysis of the parent star from HARPS spectra are presented. Observations made with SOPHIE spectrograph at Observatoire de Haute Provence, France (PNP.07A.MOUT) and HARPS spectrograph at ESO La Silla Observatory (079.C-0127(F)). The CoRoT space mission, launched on December 27th 2006, has been developed and is operated by CNES, with the contribution of Austria, Belgium, Brasil, ESA, Germany, and Spain. [less ▲]

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See detailLa Convention d'Aarhus garantit-elle le droit à la protection de l'environnement ?
Delnoy, Michel ULg

in Aménagement - Environnement (2008), n° spécial des 30 ans de la revue

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See detailRobotics and neuroscience: A rhythmic interaction
Ronsse, Renaud; Lefèvre, Philippe; Sepulchre, Rodolphe ULg

in Neural Networks (2008), 21(4), 577-583

At the crossing between motor control neuroscience and robotics system theory, the paper presents a rhythmic experiment that is amenable both to handy laboratory implementation and simple mathematical ... [more ▼]

At the crossing between motor control neuroscience and robotics system theory, the paper presents a rhythmic experiment that is amenable both to handy laboratory implementation and simple mathematical modeling. The experiment is based on an impact juggling task, requiring the coordination of two upper-limb effectors and some phase-locking with the trajectories of one or several juggled objects. We describe the experiment, its implementation and the mathematical model used for the analysis. Our underlying research focuses on the role of sensory feedback in rhythmic tasks. In a robotic implementation of our experiment, we study the minimum feedback that is required to achieve robust control. A limited source of feedback, measuring only the impact times, is shown to give promising results. A second field of investigation concerns the human behavior in the same impact juggling task. We study how a variation of the tempo induces a transition between two distinct control strategies with different sensory feedback requirements. Analogies and differences between the robotic and human behaviors are obviously of high relevance in such a flexible setup. [less ▲]

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