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See detailHCOOH distributions from IASI for 2008-2014: comparison with ground-based FTIR measurements and a global chemistry-transport model
Pommier, M.; Clerbaux, C.; Coheur, P.-F. et al

in Atmospheric Chemistry and Physics (2016), 16

Formic acid (HCOOH) is one of the most abundant volatile organic compounds in the atmosphere. It is a major contributor to rain acidity in remote areas. There are, however, large uncertainties on the ... [more ▼]

Formic acid (HCOOH) is one of the most abundant volatile organic compounds in the atmosphere. It is a major contributor to rain acidity in remote areas. There are, however, large uncertainties on the sources and sinks of HCOOH and therefore HCOOH is misrepresented by global chemistry-transport models. This work presents global distributions from 2008 to 2014 as derived from the measurements of the Infrared Atmospheric Sounding Interferometer (IASI), based on conversion factors between brightness temperature differences and representative retrieved total columns over seven regions: Northern Africa, southern Africa, Amazonia, Atlantic, Australia, Pacific, and Russia. The dependence of the measured HCOOH signal on the thermal contrast is taken into account in the conversion method. This conversion presents errors lower than 20 % for total columns ranging between 0.5 and 1 × 1016 molec/cm2 but reaches higher values, up to 78 %, for columns that are lower than 0.3 × 1016 molec/cm2. Signatures from biomass burning events are highlighted, such as in the Southern Hemisphere and in Russia, as well as biogenic emission sources, e.g., over the eastern USA. A comparison between 2008 and 2014 with ground-based Fourier transform infrared spectroscopy (FTIR) measurements obtained at four locations (Maido and Saint-Denis at La Réunion, Jungfraujoch, and Wollongong) is shown. Although IASI columns are found to correlate well with FTIR data, a large bias (> 100 %) is found over the two sites at La Réunion. A better agreement is found at Wollongong with a negligible bias. The comparison also highlights the difficulty of retrieving total columns from IASI measurements over mountainous regions such as Jungfraujoch. A comparison of the retrieved columns with the global chemistry-transport model IMAGESv2 is also presented, showing good representation of the seasonal and interannual cycles over America, Australia, Asia, and Siberia. A global model underestimation of the distribution and a misrepresentation of the seasonal cycle over India are also found. A small positive trend in the IASI columns is observed over Australia, Amazonia, and India over the 2008–2014 period (from 0.7 to 1.5 %/year), while a decrease of ∼ 0.8 %/year is measured over Siberia. [less ▲]

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See detailThe verbal overshadowing effect in children and adults is unrelated to the specific content of descriptions
Vanootighem, Valentine ULg; Brédart, Serge ULg; Dehon, Hedwige ULg

Poster (2016, July 21)

Verbal descriptions of unfamiliar faces have been found to impair later identification of these faces in children and adults, a phenomenon known as the “verbal overshadowing effect” (VOE, Schooler and ... [more ▼]

Verbal descriptions of unfamiliar faces have been found to impair later identification of these faces in children and adults, a phenomenon known as the “verbal overshadowing effect” (VOE, Schooler and Engstler-Schooler, 1990). The present study thoroughly examined the person descriptive abilities of 7–8, 10–11, and 13–14-year-old children and adults and their influence on later identification performance. Our aim was to specifically assess the prediction of the “content” account suggesting that a verbal overshadowing arises because participants generate an inadequate verbal description and later rely upon it during retrieval. Results showed a verbal overshadowing effect in all age groups but neither accuracy, length nor content of descriptions were found to be associated with identification accuracy. [less ▲]

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See detailEpiphytic bryozoans on Neptune grass – a sample-based data set
Lepoint, Gilles ULg; Heughebaert, André; Michel, Loïc ULg

in ZooKeys (2016), 606

Background The seagrass Posidonia oceanica L. Delile, commonly known as Neptune grass, is an endemic species of the Mediterranean Sea. It hosts a distinctive and diverse epiphytic community, dominated by ... [more ▼]

Background The seagrass Posidonia oceanica L. Delile, commonly known as Neptune grass, is an endemic species of the Mediterranean Sea. It hosts a distinctive and diverse epiphytic community, dominated by various macroalgal and animal organisms. Mediterranean bryozoans have been extensively studied but quantitative data assessing temporal and spatial variability have rarely been documented. In Lepoint et al. (2014a, b) occurrence and abundance data of epiphytic bryozoan communities on leaves of P. oceanica inhabiting the Revellata Bay (Corsica, Mediterranean Sea) were reported and trophic ecology of Electra posidoniae Gautier assessed. New information Here, we provide metadata information on data set discussed in Lepoint et al. 2014a and published on the GBIF portal as a sampling-event data set: http://ipt.biodiversity.be/resource?r=ulg_bryozoa&v=1.0). The data set, compared to Lepoint et al. 2014a, is enriched by data concerning species settled on Posidonia scales (dead petiole of Posidonia leaves, remaining after limb abscission). [less ▲]

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See detailPublic Participation in Science and Technology and its Normative Context. The Participatory Turn’s Legacy and the European ‘Responsible Research and Innovation’ Emerging Framework
Macq, Hadrien ULg

Master's dissertation (2016)

Over the last two decades in Europe, science and technology’s unforeseen impacts led many STS scholars to plead for a ‘participatory turn’ in order to make our democracies more able to handle ... [more ▼]

Over the last two decades in Europe, science and technology’s unforeseen impacts led many STS scholars to plead for a ‘participatory turn’ in order to make our democracies more able to handle sociotechnical controversies. However, since the outset of this participatory turn, critiques sharing the common emphasize on the importance of taking into account the context in which public participation takes place have pointed to the risk of participation being either romanticized or instrumentalized. This thesis contributes to the critical scrutinizing of public participation in science and technology. By drawing on a set of qualitative data collection strategies and on a discourse analysis of collected materials, it investigates the normative context in which public participation is currently conceived and promoted at the European level and links it to historical perspectives in order to grasp the way in which the participatory turn’s legacy has been impacted. At it shows, far from being left opened-up, public participation is strongly closed-down by normative forces that lies in the context is which its promotion is currently taking place. As argued, public participation appears as instrumentalized in Horizon 2020 due to the increasing economization of policies and the steering of science and innovation toward tackling societal challenges. However, while acknowledging that these trends are characteristic of current developments, some longer ones are highlighted. Indeed, as this research suggests, the instrumentalization of public participation goes largely beyond the mere Horizon 2020. From the Sixth Framework Programme already, it appears that the normative context in which public participation in science and technology has been conceived and promoted has always tended to instrumentalized and to close down the deliberative governance of science. [less ▲]

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See detailNeural correlates of memory for internal thoughts versus external stimuli experienced in natural settings
Stawarczyk, David ULg; Jeunehomme, Olivier ULg; D'Argembeau, Arnaud ULg

Poster (2016, July 19)

To investigate the brain regions supporting the remembrance of internal thoughts versus external events, we asked participants to perform a short walk while wearing a lifelogging device that continuously ... [more ▼]

To investigate the brain regions supporting the remembrance of internal thoughts versus external events, we asked participants to perform a short walk while wearing a lifelogging device that continuously and automatically took pictures. In a subsequent fMRI session, they were shown brief sequences of pictures from their walk and were asked to remember either external events or internal thoughts that they experienced while walking. Results showed that remembering internal thoughts activated the medial prefrontal cortex and temporal poles to a greater extent than remembering external events, whereas remembering external events was associated with higher activation in lateral frontoparietal regions. These findings suggest that memory for internal thoughts involves the reactivation of brain regions supporting the initial formation of these thoughts. [less ▲]

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See detailLes représentations du français dans le sous-système éducatif anglophone du Cameroun: le regard des élèves de la filière Arts
Mouto Betoko, Christiane ULg

Conference (2016, July 19)

Avec l’entrée du Cameroun au Commonwealth of Nations d’une part, et, le rayonnement de la langue anglaise d’autre part, les Francophones, majoritaires au Cameroun, se ruent à l’apprentissage de l’anglais ... [more ▼]

Avec l’entrée du Cameroun au Commonwealth of Nations d’une part, et, le rayonnement de la langue anglaise d’autre part, les Francophones, majoritaires au Cameroun, se ruent à l’apprentissage de l’anglais. Cependant, le mouvement inverse n’est pas visible dans la communauté anglophone minoritaire. Toutefois, un nombre non négligeable d’élèves anglophones s’engagent à poursuivre l’apprentissage du français jusqu’à la fin de leur cursus secondaire. Pour comprendre les raisons de cet engagement, nous allons répondre aux questions telles que : quelle est l’image que ces élèves se font de la langue française ? À quels projets l’associent-ils? Quel est impact des médias dans leur rapport avec le français ? Quelle est la perception de la plus-value de l’apprentissage de cette langue ? Quel est l’intérêt de la prise en compte des représentations de ces élèves dans l’enseignement du French au Cameroun ? [less ▲]

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See detailStudy of Sn and Fe based electrode materials for Alkali-ion batteries by in situ Mössbauer spectroscopy
Mahmoud, Abdelfattah ULg; Sougrati, Moulay Tahar; Hermann, Raphaël ULg et al

Conference (2016, July 19)

Li-ion batteries are widely used for electrochemical energy storage, because of their high energy density and efficiency. The most significant challenges in the development of advanced Li-ion batteries ... [more ▼]

Li-ion batteries are widely used for electrochemical energy storage, because of their high energy density and efficiency. The most significant challenges in the development of advanced Li-ion batteries concern the electrode materials. Indeed, the electrodes properties critically determine the capacity, performance, and durability of alkali-ion batteries. In the past five decades, Mössbauer spectroscopy has been an important analytical technique for investigating the structural, magnetic and electronic properties of energy materials. Mössbauer spectroscopy allows simultaneous investigation of bulk and surface characteristics. It is a non-destructive technique that can follow the behavior of electrode materials during the reaction process in situ and operando [1]. Its high resolution enables the observation of all Mössbauer active phases and the measure of their relative quantities . Iron and tin containing materials are of considerable interest as electrode material for Li-ion batteries [2, 3]. In this presentation, we report in situ and operando measurements of new electrode materials based on Fe and Sn during electrochemical cycling by combining Mössbauer spectroscopy with complementary techniques (X-ray diffraction, magnetic measurements, impedance spectroscopy, etc.) to study and investigate the electrochemical behavior of the electrode materials. [less ▲]

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See detailVariations lexicales dans la mise en prose de Barlaam et Josaphat
Lambert, Adélaïde ULg

Conference (2016, July 19)

La confrontation de la version anonyme en vers de Barlaam et Josaphat avec sa mise en prose, produite au XIIIe siècle, offre un point de vue privilégié sur la langue littéraire en prose, à l’aube de son ... [more ▼]

La confrontation de la version anonyme en vers de Barlaam et Josaphat avec sa mise en prose, produite au XIIIe siècle, offre un point de vue privilégié sur la langue littéraire en prose, à l’aube de son épanouissement. Parallèlement au retranchement d’épisodes entiers, le remanieur s’applique à conserver une étroite proximité avec la lettre de son modèle francien, et semble tendre vers un compromis entre fidélité au texte-source et intelligibilité du texte-cible. Ainsi, à côté de l’importation massive du matériau lexical et des structures syntaxiques du texte versifié, toutes ses interventions sont observables. Notre communication s’est focalisée sur un échantillon de neuf substitutions lexicales dont nous avons mesuré la fréquence et dont il s’agissait d’identifier les implications. En tant que témoins de l’actualisation linguistique du texte-source, ces variations (diachroniques et/ou diaphasiques) permettent d’améliorer la connaissance du vocabulaire de la mise en prose de Barlaam et Josaphat et de cerner avec plus de précision la sensibilité du remanieur à l’égard du lexique de sa source. [less ▲]

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See detailLa logique de l'espace dans les stemmas de Lucien Tesnière
Mazziotta, Nicolas ULg

Conference (2016, July 19)

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See detailServitude et grandeur pédagogiques. Les nouvelles circonstances et exigences du métier de professeur de français langue étrangère.
Defays, Jean-Marc ULg

Scientific conference (2016, July 19)

Les circonstances ne sont guère favorables aux professeurs de français, ni aux professeurs de langues et de cultures d’une manière générale, qui traversent des temps aussi difficiles que cruciaux dans ... [more ▼]

Les circonstances ne sont guère favorables aux professeurs de français, ni aux professeurs de langues et de cultures d’une manière générale, qui traversent des temps aussi difficiles que cruciaux dans chacun de leur pays, chacune de leur institution et chacune de leur classe. Face à l’uniformisation linguistique et culturelle, aux restrictions budgétaires, à l’instrumentalisation de l’enseignement, c’est presque devenu un sacerdoce que de promouvoir la diversité non intéressée, les échanges non commerciaux, les valeurs non marchandes, bref l’humanisme. En ce qui concerne la langue française, partant les cultures francophones, le défi n’est pas seulement – par leur enseignement – de les maintenir vivantes et attrayantes dans des pays où elles sont étrangères ou secondes, mais aussi résistantes et entreprenantes dans les pays francophones où leur échappent des domaines d’activités aussi fondamentaux que l’économie, la diplomatie, la science, voire l’enseignement supérieur. Un défi encore plus important est de replacer la culture, les cultures, que la langue, que les langues, véhiculent, associent, enrichissent, au centre du vivre-ensemble sous peine de voir s’aggraver les replis et les conflits identitaires. C’est précisément en refusant de servir une conception étroite et stérile de la mondialisation qu’acquièrent leur grandeur les projets des professeurs de français dans le monde, de leurs associations, de la FIPF. [less ▲]

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See detailRecollection versus familiarity in normal aging and in mild cognitive impairment: Impact of test format.
Simon, Jessica ULg; Gilsoul, Jessica ULg; SALMON, Eric ULg et al

Poster (2016, July 18)

The aim of this study was to investigate the impact of test format on recollection and familiarity in normal aging and in MCI. Seventy young participants, 65 younger-old, 53 older-old, and 13 MCIs were ... [more ▼]

The aim of this study was to investigate the impact of test format on recollection and familiarity in normal aging and in MCI. Seventy young participants, 65 younger-old, 53 older-old, and 13 MCIs were presented with forced-choice and yes/no visual recognition memory tasks with the Remember/Know/Guess paradigm. The young people had better recognition performance than younger-old, who performed better than older-old and MCIs. Recollection and familiarity declined progressively in healthy aging. In MCI, recollection was more affected than familiarity, but patients demonstrated a more liberal use of familiarity. Finally, test format did not influence strongly the results. Young people used recollection more often in the forced-choice task compared to the yes/no task. [less ▲]

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See detailMetagenetics and predictive microbiology: a new tool to understand the kinetics of microbial subpopulation in minced pork meat
Cauchie, Emilie ULg; Delhalle, Laurent; Taminiau, Bernard et al

Poster (2016, July 18)

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See detailMetagenetics and predictive microbiology: a new tool to understand the kinetics of microbial subpopulations in Belgian white pudding
Cauchie, Emilie ULg; Gand, Mathieu; Kergourlay, Gilles et al

Poster (2016, July 18)

Detailed reference viewed: 15 (2 ULg)
See detailProbing single molecules with the AFM: Force, motion, dynamics, and function
Duwez, Anne-Sophie ULg

Conference (2016, July 18)

Detailed reference viewed: 6 (2 ULg)
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See detailOn the organization of episodic future thoughts in event clusters
D'Argembeau, Arnaud ULg

Conference (2016, July 18)

Memory can be flexibly used to image events that might happen in one’s personal future, a capacity that has been referred to as episodic future thinking. In this talk, I will present data showing that ... [more ▼]

Memory can be flexibly used to image events that might happen in one’s personal future, a capacity that has been referred to as episodic future thinking. In this talk, I will present data showing that many episodic future thoughts are not represented in isolation, but instead are part of higher-order event clusters that organize imagined events in coherent themes and causal sequences. Personal goals seem to play an important role in this organization and neuroimaging evidence shows that event clusters recruit brain regions supporting conceptual and integrative processing. These findings suggest that episodic future thinking involves the integration of specific event representations with autobiographical knowledge, which contextualizes imagined events with respect to personal goals and general expectations about one’s life. [less ▲]

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