On the representational systems underlying prospection: Evidence from the event-cueing paradigm.

peer reviewedThe ability to think about the future-prospection-is central to many aspects of human cognition and behavior, from planning and decision making, to self-control and the construction of a sense of identity. Yet, the exact nature of the representational systems underlying prospection is not fully understood. Recent findings point to the critical role of episodic memory in imagining specific future events, but it is unlikely that prospection depends solely on this system. Using an event-cueing paradigm in two studies, we here show that specific events that people imagine might happen in their personal future are commonly embedded in broader event sequences-termed event clusters-that link a set of envisioned events according to causal and thematic relations. These findings provide novel evidence that prospection relies on multiple representational systems, with general autobiographical knowledge structures providing a frame that organizes imagined events in overarching event sequences. The results further suggest that knowledge about personal goals plays an important role in structuring these event sequences, especially for the distant future

The role of cognitive biases in reactions to bushfires

International audienceHuman behaviour is influenced by many psychological factors such as emotions, whose role is already widely recog-nised. Another important factor, and all the more so during disasters where time pressure and stress constrain reasoning, are cognitive biases. In this paper, we present a short overview of the literature on cognitive biases and show how some of these biases are relevant in a particular disaster, the 2009 bushfires in the SouthEast of Australia. We provide a preliminary formalisation of these cognitive biases in BDI (beliefs, desires, intentions) agents, with the goal of integrating such agents into agent-based models to get more realistic behaviour. We argue that taking such "irrational" behaviours into account in simulation is crucial in order to produce valid results that can be used by emergency managers to better understand the behaviour of the population in future bushfires

Mon/notre/leur corps est toujours un champ de bataille : Discours féministes et queers libertaires au Québec, 2000-2007

Les auteures se livrent à une analyse des discours produits et diffusés par des groupes et des personnes qui luttent contre le patriarcat et l’hétérosexisme en priorité et qui semblent avoir une certaine culture libertaire. Une lecture des zines, des brochures, des journaux, des compilations vidéo/DVD, des albums de musique et des sites Web leur a permis de mettre en évidence trois tendances : la première regroupe les féministes radicales, clairement en continuité avec la génération politique précédente; la deuxième tendance s’apparente au women-of-color feminism; et la troisième est représentée par des groupes queers radicaux qui, tout en tentant de déconstruire l’identité sexuelle femme, invente un militantisme de multiples identifications.In this article we share an analysis of the discourse produced and distributed by groups and individuals struggling against patriarchy and heterosexism who share an anti-authoritarian analysis and organisational form. Out of our reading of zines, brochures, newspapers, video/DVD compilations, music albums and Internet sites, have emerged three trends: the first produced by materialist feminists that is clearly in continuity with the previous political generation, the second that relates to women-of-color feminism and a third, produced by radical queer groups, who attempt to deconstruct woman as a sexual identity and to invent a politics of multiple identification

Evolution récente des glaciers du Pamir-Karakoram-Himalaya (apport de l'imagerie satellite)

La région du Pamir - Karakoram - Himalaya (PKH) constitue la plus grande réserve de glace terrestre après les régions polaires. Cependant, l'évolution récente de ces glaciers, indicateurs privilégiés du changement climatique en haute altitude, reste encore mal connue, du fait notamment de difficultés d'accès et de conditions climatiques qui rendent délicate l'acquisition de mesures in situ. L'objectif de cette thèse est de contribuer à l'amélioration des connaissances sur l'évolution globale des glaces du PKH au cours de la dernière décennie, en s'appuyant sur des images satellite et des modèles numériques de terrain (MNTs). Une premièreméthodologie a été développée pour assurer le suivi automatique de la distribution spatiale et de l'évolution temporelle des lacs glaciaires à partir d'images Landsat entre 1990 et 2009 sur sept zones d'études réparties le long du PKH. Ainsi, une certaine disparité des types, tailles et évolutions des lacs entre la partie orientale et occidentale du PKH a été mise en évidence. Sur la période de temps considérée, la superficie des lacs a légèrement diminué à l'ouest (Karakoram et Hindu Kush), a été en très nette augmentation à l'est (Népal et Bouthan) et relativement stable sur la partie centrale (Inde du nord-ouest). Le bilan de masse des glaciers a ensuite été calculé, à partir des variations d'épaisseurs mesurées en comparant deuxMNTs, acquis à deux dates différentes, et issus de lamission SRTM et du satellite SPOT5. Cette méthode implique un certain nombre de corrections et d'ajustements au préalable, afin de garantir des mesures les moins biaisées possible. Ainsi, la différence de résolution spatiale initiale des MNTs peut être à l'origine d'un biais fonction de l'altitude, de même que la pénétration des ondes radar de la mission SRTM dans la neige et la glace est à prendre en compte le cas échéant, pour ne pas sous-estimer les altitudes sur les glaciers. Là encore, on observe des disparités entre les différents bilans de masse régionaux sur la période 1999-2011, avec des pertes de masse modérées sur l'Himalaya central et oriental(-0.30+-0.08 m a-1 w.e.), plus accentuées sur l'Himalaya occidental (-0.43+-0.09 m a-1 w.e.) et des gains de masse plus à l'ouest, pour les glaciers des massifs du Pamir (+0.14+-0.11 m a-1 w.e.) et du Karakoram (+0.10+-0.20 m a-1 w.e.). Ces résultats confirment donc l'anomalie des glaciers du Karakoram et suggèrent des comportements similaires au Pamir. Le bilan de masse global des glaciers du PKH est estimé à -0.13+-0.06 m a-1 w.e.The Pamir - Karakoram - Himalaya (PKH) mountain range is considered to be the largest terrestrial ice reservoir outside polar regions. However, the recent evolution of these glaciers, recognized as valuable high-altitude climatic indicators, remains poorly known, mainly because of accessibility issues and harsh meteorologic conditions that hamper field work and in situ observations. The aim of this thesis is therefore to improve the knowledge of glacier changes in PKH and study their evolution over the past decade, based on satellite images and digital elevation models (DEMs). We first developed automatic classification algorithms to monitor the spatial distribution and temporal evolution of glacial lakes between 1990 and 2009 along the PKH, based on Landsat images. We thereby highlight different types, sizes and evolutions of glacial lakes between eastern and western PKH. During the study period the total glacial lake area slightly decreased in the west (Hindu Kush and Karakoram), greatly increased in the east (Nepal, Bhutan) and remained stable in the central part (north-west India). We then computed the mass balance of PKH glaciers from elevation changes measured by comparing two DEMs, acquired 10 years appart, by the SRTM mission and the SPOT5 satellite. This method relies on a precise relative adjustment (horizontal and vertical) of the DEMs to remove possible systematic biases within glacier elevation changes. The difference in the original spatial resolution of the DEMs can result in an elevation-dependent bias, as well as the radar penetration into snow and ice can seriously underestimate glacier elevation in the case of a DEM derived from radar data such as SRTM. The spatial pattern of regional glacier mass balances between 1999 and 2011 turns out to be contrasted, with moderatemass losses in eastern and central Himalaya (-0.30+-0.08m yr-1 w.e.), stronger in western Himalaya (-0.43+-0.09 m yr-1 w.e.) and mass gains further west, for Pamir(+0.14+-0.11 m yr-1 w.e.) and Karakoram glaciers (+0.10+-0.20 m yr-1 w.e.). The global mass balance of PKH glaciers is estimated at -0.13+-0.06 m yr-1 w.e.SAVOIE-SCD - Bib.électronique (730659901) / SudocGRENOBLE1/INP-Bib.électronique (384210012) / SudocGRENOBLE2/3-Bib.électronique (384219901) / SudocSudocFranceF

Sensory contribution to vocal emotion deficit in patients with cerebellar stroke

In recent years, there has been increasing evidence of cerebellar involvement in emotion processing. Difficulties in the recognition of emotion from voices (i.e., emotional prosody) have been observed following cerebellar stroke. However, the interplay between sensory and higher-order cognitive dysfunction in these deficits, as well as possible hemispheric specialization for emotional prosody processing, has yet to be elucidated. We investigated the emotional prosody recognition performances of patients with right versus left cerebellar lesions, as well as of matched controls, entering the acoustic features of the stimuli in our statistical model. We also explored the cerebellar lesion-behavior relationship, using voxel-based lesion-symptom mapping. Results revealed impairment of vocal emotion recognition in both patient subgroups, particularly for neutral or negative prosody, with a higher number of misattributions in patients with right-hemispheric stroke. Voxel-based lesion-symptom mapping showed that some emotional misattributions correlated with lesions in the right Lobules VIIb and VIII and right Crus I and II. Furthermore, a significant proportion of the variance in this misattribution was explained by acoustic features such as pitch, loudness, and spectral aspects. These results point to bilateral posterior cerebellar involvement in both the sensory and cognitive processing of emotions