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See detailAboveground biomass mapping of African forest mosaics using canopy texture analysis: towards a regional approach.
Bastin, Jean-François ULg; Barbier, Nicolas; Couteron, Pierre et al

in Ecological Applications (in press)

In the context of the reduction of greenhouse gas emissions caused by deforestation and forest degradation (the REDD+ program), optical very high resolution (VHR) satellite images provide an opportunity ... [more ▼]

In the context of the reduction of greenhouse gas emissions caused by deforestation and forest degradation (the REDD+ program), optical very high resolution (VHR) satellite images provide an opportunity to characterize forest canopy structure and to quantify aboveground biomass (AGB) at less expense than methods based on airborne remote sensing data. Among the methods for processing these VHR images, Fourier textural ordination (FOTO) presents a good potential to detect forest canopy structural heterogeneity and therefore to predict AGB variations. Notably, the method does not saturate at intermediate AGB values as do pixelwise processing of available space borne optical and radar signals. However, a regional scale application requires to overcome two difficulties: (i) instrumental effects due to variations in sun-scene-sensor geometry or sensor-specific responses that preclude the use of wide arrays of images acquired under heterogeneous conditions and (ii) forest structural diversity including monodominant or open canopy forests, which are of particular importance in Central Africa. In this study, we demonstrate the feasibility of a rigorous regional study of canopy texture by harmonizing FOTO indices of images acquired from two different sensors (Geoeye-1 and QuickBird-2) and different sun-scene-sensor geometries and by calibrating a piecewise biomass inversion model using 26 inventory plots (1 ha) sampled across very heterogeneous forest types. A good agreement was found between observed and predicted AGB (RSE=15%; R²=0.85; p-value<0.001) across a wide range of AGB levels from 26 Mg/ha to 460 Mg/ha, and was confirmed by cross validation. A high-resolution biomass map (100 m pixels) was produced for a 400 km² area, and predictions obtained from both imagery sources were consistent with each other (r=0.86; slope=1.03; intercept=12.01 Mg/ha). These results highlight the horizontal structure of forest canopy as a powerful descriptor of the entire forest stand structure and heterogeneity. In particular, we show that quantitative metrics resulting from such textural analysis offer new opportunities to characterize the spatial and temporal variation of the structure of dense forests and may complement the toolbox used by tropical forest ecologists, managers or REDD+ national monitoring, reporting and verification bodies. [less ▲]

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See detailBreed-specific hematologic reference intervals in healthy adult Dogue de Bordeaux dogs
Lavoué, Rachel; Geffré, A; Braun, JP et al

in Veterinary Clinical Pathology (in press)

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See detailAberrations chromatiques : de l’émulsion au pixel
Thonon, Jonathan ULg

in Cahiers Louis Lumière (in press)

Dans l’une de ses conversations avec Joachim Gasquet sur le sens de sa peinture (et de la peinture en général), Cézanne aborde de front la conception qu’il se fait de la couleur, dans son rapport à la ... [more ▼]

Dans l’une de ses conversations avec Joachim Gasquet sur le sens de sa peinture (et de la peinture en général), Cézanne aborde de front la conception qu’il se fait de la couleur, dans son rapport à la profondeur picturale et de son articulation à la surface : « La nature n'est pas en surface ; elle est en profondeur. Les couleurs sont l'expression, à cette surface, de cette profondeur. Elles montent des racines du monde ». Cet « organisme de couleurs » que constitue le monde est transcrit dans la peinture de Cézanne par une dynamique symbiotique de la couleur et du dessin, de la ligne et du pan. La couleur restitue, par sa masse, son surgissement, son homogénéité, presque sa viscosité, la véritable chaire perceptive du monde ; une vision qui tient à distance la perspective géométrique, photographique, cinématographique fondée sur la transparence et qui repose, comme le signale Merleau-Ponty, sur la « réversibilité des dimensions » (surface-profondeur) et l’entrelacement des choses. C’est cette épaisseur du visible rendu par la couleur que l’économie de l’image numérique nous permet de redécouvrir, moins dans le registre de la « tactilité » de l’image et la picturalité du pixel, que par l’intégration, entre le support et l’image (parfois indiscernables dans le régime optique), d’un « corps » algorithmique qui règle l’actualisation du visible. Certains défauts techniques du dispositif numérique, aujourd’hui élevés au rang de pratique artistique, permettent de révéler cette matrice qui utilise alors la couleur et la coulure comme mode de visibilité. C’est le cas du Datamoshing, technique de composition numérique qui revisite tout en la radicalisant la pratique de l’incrustation vidéo. Basée sur la perturbation volontaire d’éléments de la matrice, cette technique transforme les couleurs en une forme malléable et fluide révélant ainsi leur double nature spatiale : elles sont à la fois dans l’espace de l’image et l’espace de l’image lui-même. Ces expériences de défigurations d’images s’inscrivent dans le registre des « aberrations chromatiques » dont nous proposons ici une rapide généalogie avant d’interroger la couleur digitale dans ses spécificités. [less ▲]

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See detailFranz Brentano. Vol. 2. Intentionality and Philosophy of Mind
Boccaccini, Federico ULg; Antonelli, Mauro

Book published by Routledge (in press)

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See detailUne approche ergonomique au service de l'étude d'une démarche psychosociale : le cas de l'analyse de la demande en formation d'adultes
Danse, Cédric ULg

in Actes du XVIème congrés de l'Association Internationale de Psychologie du Travail de Langue Française (in press)

L’analyse de la demande est une étape particulièrement importante dans le cadre d’une ingénierie de la formation. Pourtant, en raison de sa parenté particulièrement prégnante avec le courant ... [more ▼]

L’analyse de la demande est une étape particulièrement importante dans le cadre d’une ingénierie de la formation. Pourtant, en raison de sa parenté particulièrement prégnante avec le courant psychosociologique la formation, elle est rarement étudiée sous l’angle de l’analyse de l’activité : approches psychosociale et ergonomique ne se parlent en effet que trop peu. Cette contribution met dès lors ces deux courants en relation en énonçant notamment la structuration de ces entretiens et les préoccupations des formateurs lorsqu’ils mènent une analyse de la demande. [less ▲]

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See detailEfficacy and safety of currently marketed anti-osteoporosis medications
Reginster, Jean-Yves ULg; NEUPREZ, Audrey ULg; Dardenne, Nadia ULg et al

in Best Practice & Research. Clinical Endocrinology & Metabolism (in press)

During the past 2 decades, many interventions were proven effective in the management of postmenopausal osteoporosis. The objective of an anti-osteoporosis treatment is to reduce fracture rates, ideally ... [more ▼]

During the past 2 decades, many interventions were proven effective in the management of postmenopausal osteoporosis. The objective of an anti-osteoporosis treatment is to reduce fracture rates, ideally at all skeletal sites (i.e. spine, hip, and other non-spine). The armamentarium against osteoporosis includes anti-resorptive agents (i.e. bisphosphonates, selective estrogen receptor modulators and denosumab), bone-forming agents (i.e. peptides from the parathyroid hormone family) and one agent with a dual mechanism of action (i.e. strontium ranelate). All these medications combine anti-fracture efficacy with a reasonable benefit/risk profile. However, the choice of a particular chemical entity, in one individual patient is based on the knowledge and expertise of the physician. Prioritization of drugs should be based on the individual profile of the patient, the severity of osteoporosis and the specific contraindications, warnings and precautions of use of the various available medications. [less ▲]

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See detailIdentifying Semitic loanwords in Late Egyptian
Winand, Jean ULg

in Dils, Peter; Grossman, Eitan; Richter, Sebastian (Eds.) et al Language Contact and Bilingualism in antiquity: What Linguistic Borrowing into Coptic can tell us about it (in press)

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See detailMaking and transforming art : changes in artists’ materials and practice
Neven, Sylvie ULg; Dubois, Hélène; Eyb-Green, Sigrid et al

Book published by Archetype Publications (in press)

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See detailMetamorfosi della seduzione 1 : La donna, il corpo malato, la statua in D'Annunzio e dintorni
Curreri, Luciano ULg

Book published by Nerosubianco - 2ème édition revue (in press)

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See detailMetacognitive components in learning to learn approaches
Frenkel, Stéphanie ULg

in International Journal of Psychology : A Biopsychosocial Approach (in press)

Background. Numerous students are having school difficulties linked to the way they learn. Some people speak of a “metacognitive deficit”. We refer to a “sleeping potential” instead. Be it psychologists ... [more ▼]

Background. Numerous students are having school difficulties linked to the way they learn. Some people speak of a “metacognitive deficit”. We refer to a “sleeping potential” instead. Be it psychologists, teachers or parents, all wish to develop their skills in order to help these students. This is the case in primary and secondary school. The EDUCA + project is intended to provide possible solutions. Purpose. The aim of this paper is to present a metacognitive and cognitive theory of learning to learn, which will (a) explain why numerous students are having school difficulties, and (b) predict the success of the EDUCA + project. [less ▲]

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See detailLe développement de la compétence scripturale en FLS/FLE à l'université à l'aide des TIC : perceptions, pratiques et pistes d'exploitation
Dezutter, Olivier; Bleys, Françoise; Poirier, Vicky et al

in Les Centres de langues et la mise en œuvre des politiques linguistiques dans l’enseignement supérieur : Enseignement – Recherche - Mobilités (in press)

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See detailSymboles et abréviation chrétiens dans les papyrus littéraires grecs à contenu profane (IVe-VIIe siècles)
Carlig, Nathan ULg

in Derda, Tomasz; Urbanik, Jakub (Eds.) Acts of the 27th International Congress of Papyrology (Warsaw, 29th July - 3rd August 2013) (in press)

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See detailAntiquité tardive et christianisme africains dans l'Africa romana : un bilan historiographique
Fialon, Sabine ULg

in Ruggeri, Paola (Ed.) L’Africa romana XX. Momenti di continuita e rottura : bilancio di 30 anni di convegni de l’Africa romana (in press)

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See detailA New Shift-Share Method
Artige, Lionel ULg; Van Neuss, Leif ULg

in Growth and Change (in press)

Shift-share analysis is a decomposition technique widely used in regional studies to quantify an industry-mix effect and a competitive effect on the growth of regional employment (or any other relevant ... [more ▼]

Shift-share analysis is a decomposition technique widely used in regional studies to quantify an industry-mix effect and a competitive effect on the growth of regional employment (or any other relevant variable) relative to the national average. This technique has always been subject to criticism for its lack of theoretical basis. This paper presents a critical assessment of the methods suggested by Dunn (1960) and by Esteban-Marquillas (1972) and proposes a new shift-share method, which separates out the two effects unambiguously. By way of illustration, we provide an application to manufacturing employment in the Belgian provinces between 1995 and 2007. [less ▲]

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See detailFermentation profile of Saccharomyces cerevisiae and Candida tropicalis as starter cultures on barley malt medium
Alloue-Boraud, Mireille; N’Guessan, Kouadio; Djeni, Théodore et al

in Journal of Food Science & Technology (in press)

Saccharomyces cerevisiae C8-5 and Candida tropicalis F0-5 isolated from traditional sorghum beer were tested for kinetic parameters on barley malt extract, YPD (863 medium) and for alcohol production. The ... [more ▼]

Saccharomyces cerevisiae C8-5 and Candida tropicalis F0-5 isolated from traditional sorghum beer were tested for kinetic parameters on barley malt extract, YPD (863 medium) and for alcohol production. The results showed that C. tropicalis has the highest maximum growth rate and the lowest doubling time. Values were 0.22 h-1 and 0.32 h-1 for maximum growth rate, 3 h 09 min and 2 h 09 min for doubling time respectively on barley malt extract and YPD. On contrary, glucose consumption was the fastest with S. cerevisiae (-0.36 g/l/h and -0.722 g/l/h respectively on barley malt extract and YPD). When these two yeasts were used as starters in pure culture and co-culture at proportion of 1:1 and 2:1 (cell/cell) for barley malt extract fermentation, we noticed that maltose content increased first from 12.12 g/l to 13.62-16.46 g/l and then decreased. The highest increase was obtained with starter C. tropicalis + S. cerevisiae 2:1. On contrary, glucose content decreased throughout all the fermentation process. For all the starters used, the major part of the ethanol was produced at 16 h of fermentation. Values obtained in the final beers were 11.4, 11.6, 10.4 and 10.9 g/l for fermentation conducted with S. cerevisiae, C. tropicalis, C. tropicalis + S. cerevisiae 1:1 and C. tropicalis + S. cerevisiae 2:1. Cell viability measurement during the fermentation by using flow cytometry revealed that the lowest mean channel fluorescence for FL3 (yeast rate of death) was obtained with C. tropicalis + S. cerevisiae 2:1 after 48 h of fermentation. [less ▲]

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See detailEstablishment of a murine graft-versus-myeloma model using allogeneic stem cell transplantation
Binsfeld, Marilène ULg; Beguin, Yves ULg; Belle, Ludovic et al

in PLoS ONE (in press)

Background: Multiple myeloma (MM) is a malignant plasma cell disorder with poor long-term survival and high recurrence rates. Despite evidence of graft-versus-myeloma (GvM) effects, the use of allogeneic ... [more ▼]

Background: Multiple myeloma (MM) is a malignant plasma cell disorder with poor long-term survival and high recurrence rates. Despite evidence of graft-versus-myeloma (GvM) effects, the use of allogeneic hematopoietic stem cell transplantation (allo-SCT) has remained controversial in MM. In the current study, we investigated the anti-myeloma effects of allo-SCT from B10.D2 mice into MHC-matched myeloma-bearing Balb/cJ mice (previously injected with the MOPC315.BM myeloma cell line), based on a chronic graft-versus-host disease (GvHD) murine model. Methods and results: Balb/cJ mice were injected intravenously with luciferase-transfected MOPC315.BM cells, and received 30 days later an allogeneic (B10.D2 donor) or autologous (Balb/cJ donor) transplantation by intravenous administration of bone marrow cells and splenocytes. We observed a graft-versus-myeloma effect in 94% of the allogeneic transplanted mice, as luciferase signal completely disappeared after transplantation, whereas all the autologous transplanted mice showed myeloma evolution. Lower serum paraprotein levels and myeloma infiltration in bone marrow and spleen in the allogeneic setting confirmed the observed GvM effect, while allogeneic mice also displayed chronic GvHD symptoms. In vivo and in vitro data suggest the involvement of effector memory CD4 and CD8 T cells in the GvM effect. The essential role of CD8 T cells was demonstrated in vivo where CD8 T-cell depletion of the graft resulted in reduced GvM effects. Finally, TCR V spectratyping analysis identified V families within CD4 and CD8 T cells which were associated with both GvM effects and GVHD, whereas other V families within CD4 T cells were associated exclusively with either GvM or GvHD responses. Conclusions: We successfully established an immunocompetent murine model of graft-versus-myeloma. This is the first immunocompetent murine model which is based on a MM model closely resembling human MM disease (bone marrow tropism, ...) and using allo-SCT after the disease establishment, as a curative treatment [less ▲]

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