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See detailClarifying the Socio-Economic Dimensions of Agroecology: Between Principles and Practices
Dumont, Antoinette M.; Vanloqueren, Gaëtan; Stassart, Pierre M ULg et al

in Agroecology and Sustainable Food Systems (2016), 1(1), 24-47

AbstractThe concept of agroecology is being mobilized increasingly. However, its socio-economic dimensions receive little attention from academia. This study helps to clarify the socio-economic principles ... [more ▼]

AbstractThe concept of agroecology is being mobilized increasingly. However, its socio-economic dimensions receive little attention from academia. This study helps to clarify the socio-economic principles of agroecology by first identifying a list of principles in popular and scientific literature and, as a second step, by putting the principles to the test of a qualitative study of two Belgian organizations. Agribio is a grain cooperative, and Les Grosses L√©gumes is a network of consumers, farmers, and the members of an association set up to organize the production and distribution of vegetable boxes. Semi-directed interviews of the various actors linked to these organizations were conducted and then analyzed through an approach inspired by the convention theory in order to reveal the principles that the stakeholders have adopted. The main findings are then made explicit by analysis of four strong agreements (which concern the two organizations? marketing schemes, a Participatory Guarantee System set up by Les Grosses L√©gumes and Agribio?s flour mill). The two case studies show the gap that exists between the principles that describe the horizon of agroecology and the principles that are actually put into practice by the parties in the field through various transition pathways. [less ▲]

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See detailCytogenetic Studies of Rwandan Pediatric Patients Presenting with Global Developmental Delay, Intellectual Disability and/or Multiple Congenital Anomalies.
Uwineza, Annette; Hitayezu, Janvier; JAMAR, Mauricette ULg et al

in Journal of tropical pediatrics (2016)

Global developmental delay (GDD) is defined as a significant delay in two or more developmental domains: gross or fine motor, speech/language, cognitive, social/personal and activities of daily living ... [more ▼]

Global developmental delay (GDD) is defined as a significant delay in two or more developmental domains: gross or fine motor, speech/language, cognitive, social/personal and activities of daily living. Many of these children will go on to be diagnosed with intellectual disability (ID), which is most commonly defined as having an IQ <75 in addition to impairment in adaptive functioning. Cytogenetic studies have been performed in 664 Rwandan pediatric patients presenting GDD/ID and/or multiple congenital abnormalities (MCA). Karyotype analysis was performed in all patients and revealed 260 chromosomal abnormalities. The most frequent chromosomal abnormality was Down syndrome and then Edward syndrome and Patau syndrome. Other identified chromosomal abnormalities included 47,XX,+del(9)(q11), 46,XY,del(13)(q34) and 46,XX,der(22)t(10;22)(p10;p10)mat. In conclusion, our results highlight the high frequency of cytogenetically detectable abnormalities in this series, with implications for the burden on the healthcare. This study demonstrates the importance of cytogenetic analysis in patients with GDD/ID and MCA. [less ▲]

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See detailConditional portfolio allocation: Does aggregate market liquidity matter?
Bazgour, Tarik ULg; Heuchenne, Cédric ULg; Sougné, Danielle ULg

in Journal of Empirical Finance (2016), 35

This paper investigates how aggregate liquidity influences optimal portfolio allocations across various US characteristic portfolios. We consider short-term allocation problems, with single and multiple ... [more ▼]

This paper investigates how aggregate liquidity influences optimal portfolio allocations across various US characteristic portfolios. We consider short-term allocation problems, with single and multiple risky assets, and use the nonparametric approach of Brandt (1999) to directly express optimal portfolio weights as functions of aggregate liquidity shocks. We find, first, that the effect of aggregate liquidity is positive and decreasing with the investment horizon. Second, at daily and weekly horizons, this effect is weaker on allocations in large stocks and gets stronger as we move toward small stocks, regardless of the other stock characteristics, suggesting that liquidity is the main concern of very short-term investors. Third, conditional allocations in risky assets decrease and exhibit shifts toward more liquid assets as aggregate liquidity worsens. Overall, conditioning on aggregate liquidity yields empirical results that are consistent with the so-called flight-to-safety and flight-to-liquidity episodes. Finally, we propose a simple tactical investment strategy and show how aggregate liquidity information can be exploited to enhance the out-of-sample performance of long-term strategies. [less ▲]

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See detailImpact of Serial B-Type Natriuretic Peptide Changes for Predicting Outcome in Asymptomatic Patients With Aortic Stenosis.
Henri, Christine; DULGHERU, Raluca Elena ULg; Magne, Julien et al

in The Canadian journal of cardiology (2016)

BACKGROUND: The aim of this study was to determine the impact on the outcome of serial B-type natriuretic peptide (BNP) changes during follow-up in asymptomatic patients with >/= moderate aortic stenosis ... [more ▼]

BACKGROUND: The aim of this study was to determine the impact on the outcome of serial B-type natriuretic peptide (BNP) changes during follow-up in asymptomatic patients with >/= moderate aortic stenosis (AS) and preserved left ventricular ejection fraction. METHODS: We prospectively screened 69 patients who underwent comprehensive transthoracic echocardiography, BNP level measurement at baseline and after every 6 or 12 months. Annualized BNP changes were calculated as the difference between the last and baseline BNP measurements divided by the duration of follow-up. The primary endpoint was the occurrence of symptoms, aortic valve replacement, or cardiovascular death. RESULTS: During a follow-up of 30 +/- 19 months, 43 patients experienced a cardiac event. These patients were significantly older (73 +/- 9 vs 65 +/- 16 years; P = 0.010), had more often dyslipidemia (79% vs 42%; P = 0.038), more severe AS (peak velocity: 3.9 +/- 0.6 vs 3.5 +/- 0.6 m/s; P = 0.002), larger indexed left atrial area (10.2 +/- 2.5 vs 8.7 +/- 1.9 cm2/m2; P = 0.006), and a higher increase in annualized BNP (+90 +/- 155 vs +7 +/- 49 pg/mL/y; P = 0.010). Patients with higher annualized BNP changes (> 20 pg/mL/y) had a significantly lower cardiac event-free survival (1 year: 63 +/- 8% vs 97 +/- 3%; 3 years: 31 +/- 8% vs 68 +/- 8%; P < 0.001). Using the multivariate Cox proportional hazards model, higher annualized BNP changes were significantly associated with increased risk of cardiac events (hazard ratio: 2.73, 95% confidence interval: 1.27-5.86; P = 0.010) after adjustment for age, dyslipidemia, and echocardiographic parameters. CONCLUSIONS: In asymptomatic patients with AS and preserved left ventricular ejection fraction, the use of serial BNP changes may help to anticipate development of class I indication for aortic valve replacement. [less ▲]

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See detailORCHIDEE-CROP (v0), a new process based Agro-Land Surface Model: model description and evaluation over Europe
Wu, Xiuchen; Vuichard, N.; Ciais, P. et al

in Geoscientific Model Development Discussions [=GMDD] (2016), 8

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See detailMigration, prostitution and the representation of the black female subject in Nigerian video films about Italy
Jedlowski, Alessandro ULg

in Journal of Italian Cinema and Media Studies (2016), 4(1), 9-23

Much contemporary images of black women in Italian media are marked by the legacy of colonialist propaganda and tend to perpetuate a representation of black women as passive eroticized objects of the ... [more ▼]

Much contemporary images of black women in Italian media are marked by the legacy of colonialist propaganda and tend to perpetuate a representation of black women as passive eroticized objects of the white male gaze. In this sense, Ponzanesi’s call for ‘new and less biased representations, which could help to assess the multiple subject positions that black identities now occupy’ (2005: 179) is still relevant. This article responds to this call by analyzing two Nigerian video films that thematize migration and prostitution trafficking in Italy. By highlighting the complexity of the processes of ‘subjectivation’ taking place throughout the migratory process, these videos invite their viewers to look at the postcolonial subject’s responsibility in shaping the world in which s/he lives, and offer a representation of the black female subject able to go beyond the voyeuristic attitude that characterize much of the existing contemporary Italian visual culture about this topic. [less ▲]

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See detailDiscours et stratégies dans les déclarations criminelles élaborées devant les notaires liégeois aux XVIIe et XVIIIe siècles
Drécourt, Aurore ULg

in Dire, (d)écrire, représenter la violence, Colloque international du CRIHAM (2016)

Le présent projet de communication propose une étude sur la manière de représenter la violence ainsi que son instrumentalisation à des fins personnelles dans des actes relevant de la pratique notariale ... [more ▼]

Le présent projet de communication propose une étude sur la manière de représenter la violence ainsi que son instrumentalisation à des fins personnelles dans des actes relevant de la pratique notariale aux XVIIe et XVIIIe siècles à Liège. L’analyse de ces sources est novatrice pour une histoire de la criminalité. En effet, les historiens se sont avant tout centrés sur les archives des cours judiciaires. Il semble cependant que les populations d’Ancien Régime n’allaient pas systématiquement devant le juge pour régler leurs conflits. Ainsi des accords, qui ne seraient sans doute jamais parvenus à la connaissance de l’historien par la seule étude des archives criminelles, émergent dans les actes relevant de la pratique notariale. Outre ces accommodements clairement identifiés dans les minutes, les populations d’Ancien Régime se déplacent également devant notaires pour que ceux-ci retranscrivent, plus ou moins fidèlement, le récit subjectif d’un évènement vécu. Ces déclarations criminelles seront ensuite, selon le choix du comparant, enregistrées ou non au greffe. En effet, cette trace d’accusation ou de témoignage ne parvient pas systématiquement aux autorités. Tout dépend de l’évolution du conflit et parfois le simple déplacement chez le notaire pousse la partie adverse à s’accommoder avant le passage en justice. Ces déclarations criminelles constituent des sources particulièrement intéressantes pour observer la psychologie, les perceptions et les interprétations de la violence des victimes et des agresseurs. Nous proposons ici d’étudier les stratégies discursives mises en œuvre lors de la passation d’une déclaration devant le notaire et sur ce qu’elles révèlent de la société qui les produit. En effet, ces témoignages constituent une véritable mise en scène de la violence, qui est instrumentalisée afin d’obtenir gain de cause lors d’un conflit. Comment les comparants s’y prennent-ils ? Quels sont les topoï les plus souvent utilisés ? Observe-t-on une évolution de ces discours entre le XVIIe et le XVIIIe siècle ? Cette analyse permettra de mettre en lumière la manière dont la société attribuait différents seuils de gravité à des actes violents, leurs circonstances aggravantes et comment ces représentations de la société étaient sciemment utilisées par les intervenants pour déconstruire la gravité de leurs actes. Enfin, étudier la violence et les discours des personnes impliquées permet également une meilleure compréhension de phénomènes sociaux que nous proposons de souligner, comme l’importance de l’honneur et sa place essentielle dans la société d’Ancien Régime. [less ▲]

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See detailAbelian bordered factors and periodicity
Charlier, Emilie ULg; Harju, Tero; Puzynina, Svetlana et al

in European Journal of Combinatorics (2016), 51

A finite word u is said to be bordered if u has a proper prefix which is also a suffix of u, and unbordered otherwise. Ehrenfeucht and Silberger proved that an infinite word is purely periodic if and only ... [more ▼]

A finite word u is said to be bordered if u has a proper prefix which is also a suffix of u, and unbordered otherwise. Ehrenfeucht and Silberger proved that an infinite word is purely periodic if and only if it contains only finitely many unbordered factors. We are interested in abelian and weak abelian analogues of this result; namely, we investigate the following question(s): Let w be an infinite word such that all sufficiently long factors are (weakly) abelian bordered; is w (weakly) abelian periodic? In the process we answer a question of Avgustinovich et al. concerning the abelian critical factorization theorem. [less ▲]

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See detailSaturn’s auroral morphology and field-aligned currents during a solar wind compression
Badman, S.V.; Provan, G.; Bunce, E.J. et al

in Icarus (2016)

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See detailLes conséquences de la philosophie
Longo, Giuseppe; Cavazzini, Andrea ULg

in Glass Bead (2016)

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See detailFlexible estimation in cure survival models using Bayesian P-splines
Bremhorst, Vincent; Lambert, Philippe ULg

in Computational Statistics & Data Analysis (2016), 93

In the analysis of survival data, it is usually assumed that any unit will experience the event of interest if it is observed for a sufficiently long time. However, it can be explicitly assumed that an ... [more ▼]

In the analysis of survival data, it is usually assumed that any unit will experience the event of interest if it is observed for a sufficiently long time. However, it can be explicitly assumed that an unknown proportion of the population under study will never experience the monitored event. The promotion time model, which has a biological motivation, is one of the survival models taking this feature into account. The promotion time model assumes that the failure time of each subject is generated by the minimum of N independent latent event times with a common distribution independent of N. An extension which allows the covariates to influence simultane- ously the probability of being cured and the latent distribution is presented. The latent distribution is estimated using a flexible Cox proportional hazard model where the logarithm of the baseline hazard function is specified using Bayesian P-splines. Introducing covariates in the latent distribution implies that the population hazard function might not have a proportional hazard structure. However, the use of P- splines provides a smooth estimation of the population hazard ratio over time. The identification issues of the model are discussed and a restricted use of the model when the follow up of the study is not sufficiently long is proposed. The accuracy of our methodology is evaluated through a simulation study and the model is illustrated on data from a Melanoma clinical trial. [less ▲]

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See detailThe Magnetodiscs and Aurorae of Giant Planets
Szego, Karoly; Achilleos, Nicholas; Arridge, Chris et al

Book published by Springer Science & Business Media B.V. - Previously published in Space Science Reviews, Volume 187, Issues 1-4, 2015 (2016)

This volume contains the reports discussed during the Workshop “Giant Planet Magne- todiscs and Aurorae” held 26–30 November 2012, at the International Space Science Insti- tute, organised together with ... [more ▼]

This volume contains the reports discussed during the Workshop “Giant Planet Magne- todiscs and Aurorae” held 26–30 November 2012, at the International Space Science Insti- tute, organised together with the Europlanet project, supported by FP7 (Grant No. 228319). Magnetodiscs are large current sheets surrounding Jupiter and Saturn (also Uranus and Neptune) that are filled with plasma principally originating in the natural satellites of these worlds. They are also solar system analogues for astrophysical discs. Magnetodiscs are spe- cial features of the fast rotating giant planets, a special feature of rotationally driven magne- tospheres. Their structure is modified by variability in their plasma sources and by the solar wind. Auroral signatures in the optical and radio wavebands allow a diagnostic of these dynamical processes and enable the visualisation of these large plasma and field structures.The objective of this workshop was to address outstanding issues in the structure and dynamics of magnetodiscs using a comparative approach (see details under topics). More specifically, we aimed to review current understanding of magnetodiscs and auroral re- sponses to magnetodisc dynamics; characterise and understand radial plasma transport in magnetodiscs; determine how magnetic reconnection works in magnetodiscs, and describe the effects on plasma transport; describe the associated auroral responses to internal and ex- ternal magnetospheric processes; characterise how the solar wind influences magnetodiscs and the auroral responses to solar wind-driven dynamics; characterise the spectral and spa- tial properties of auroral emissions produced by magnetodisc dynamics; answer the ques- tion of whether there are significant differences between solar wind- and internally-driven dynamics; and determine the sources of local-time asymmetries in magnetodiscs. This volume is a unique synthesis of all aspects of the giant magnetospheres and their aurorae; it provides an interdisciplinary approach to understanding the coupled system from the solar wind to the atmosphere; it combines the latest observations with current theory and models; and it also contains sufficient breadth for students of magnetospheric and space physics to use as a reference for future research. [less ▲]

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See detailLe concevable et l'imaginable. Analyse conceptuelle et intuition éidétique
Leclercq, Bruno ULg

in le Cercle herméneutique (2016)

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See detailPhotocatalytic decomposition of hydrogen peroxide over nanoparticles of TiO2 and Ni(II)-porphyrin doped TiO2: a relationship between activity and porphyrin anchoring mode
Tasseroul, Ludivine ULg; Pàez Martinez, Carlos ULg; Lambert, Stéphanie ULg et al

in Applied Catalysis B : Environmental (2016), 182

The nickel tetra(4-carboxyphenyl)porphyrin (TCPPNi) was chimisorbed on Degussa P25 TiO2 at different concentrations. Diffuse reflectance spectroscopy in the UV/vis region, Fourier transform infrared ... [more ▼]

The nickel tetra(4-carboxyphenyl)porphyrin (TCPPNi) was chimisorbed on Degussa P25 TiO2 at different concentrations. Diffuse reflectance spectroscopy in the UV/vis region, Fourier transform infrared spectroscopy and thermal gravimetry combined with differential scanning calorimetry measurements allowed the determination of the TCPPNi anchoring mode. At low TCPPNi concentrations, this anchoring on Degussa P25 TiO2 took place through all four carboxylic groups, while at higher concentrations the anchoring occurred through one or two carboxylic groups. For the firsttime,the effect of UV/vis light irradiation on the H2O2-degradation activity of TiO2 and TCPPNi-doped TiO2 was studied using the method of following the production of O2 by gas pressure monitoring. The activity of seven different catalysts was related to the TCPPNi anchoring mode and the percentage of TiO2 Degussa P25 coverage. An optimum degradation of H2O2 was observed for 0.0115 mol TCPPNi × g−1 P25. In that case, the TCPPNi was anchored through the four carboxylic groups, corresponding to a strong interaction with Degussa P25 TiO2. Moreover, the TCPPNi did not cover the surface completely, therefore allowing the light to reach and activate the TiO2. [less ▲]

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See detailConclusion
Marganne, Marie-Hélène ULg

in Marganne, Marie-Hélène; Ricciardetto, Antonio (Eds.) En marge du Serment hippocratique : contrats et serments dans le monde gréco-romain. Actes de la Journée d’étude internationale (Liège, 29 octobre 2014) (2016)

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See detailDesign report of the specimens for all the experimental analyses - Deliverable D.4.1 - Robustimpact
Hoffmann, Nadine; Kuhlmann, Ulrike; Huvelle, Clara et al

Report (2016)

The present report focuses on the design of the experimental analysis that are going to be performed within the ROBUSTIMPACT project (Grant Agreement Number: RFSR-CT-2012-00029). The project focuses on ... [more ▼]

The present report focuses on the design of the experimental analysis that are going to be performed within the ROBUSTIMPACT project (Grant Agreement Number: RFSR-CT-2012-00029). The project focuses on the behavior of composite steel and concrete framed buildings against accidental actions. Within the project, several experimental analyses are going to be performed spanning from the local to the global behavior. The report is divided in 4 parts, each one describing the preliminary work of each partner of the project. In particular:  Part A reports the work performed by USTUTT (University of Stuttgart) including the design of four experimental tests on composite joints and two experimental tests on composite frames. In particular, the composite joints will be investigated in order to better understand the behavior in terms of activation of catenary actions. The tests on composite frames are performed investigating the influence of the high speed loading and strain rate effects on the deformation capacity of these structures.  Part B reports the work performed by ULg (University of Liege) including the design of 44 experimental impact tests on beam-to-column joints and column base joints. With these tests will be possible to investigate the response of different joint components under impact loading for different level of energy.  Part C reports the work performed by UTRE (Università degli Studi di Trento) including the design of the case study reference structures and the design of the experimental tests. In particular, two 3D full scale tests will be performed by simulating to total loss of the impacted column in order to investigate the redundancy of the 3D slab system in terms of activation of membrane effects.  Part D reports the work performed by RWTH (University of Aachen) including the design of six crash tests on columns that are going to be performed in order to investigate the residual strength of the damaged member after the impact. The aim is to determine the response of the member during the impact as well as the dynamic interaction of the member with the surrounding structure. [less ▲]

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See detailThe internal consistency of the North Sea carbonate system
Salt, Lesley A.; Thomas, Helmuth; Bozec, Yann et al

in Journal of Marine Systems (2016), 157

Abstract In 2002 (February) and 2005 (August), the full suite of carbonate system parameters (total alkalinity (AT), dissolved inorganic carbon (DIC), pH, and partial pressure of \{CO2\} (pCO2) were ... [more ▼]

Abstract In 2002 (February) and 2005 (August), the full suite of carbonate system parameters (total alkalinity (AT), dissolved inorganic carbon (DIC), pH, and partial pressure of \{CO2\} (pCO2) were measured on two re-occupations of the entire North Sea basin, with three parameters (AT, DIC, pCO2) measured on four additional re-occupations, covering all four seasons, allowing an assessment of the internal consistency of the carbonate system. For most of the year, there is a similar level of internal consistency, with \{AT\} being calculated to within ± 6 μmol kg− 1 using \{DIC\} and pH, \{DIC\} to ± 6 μmol kg− 1 using \{AT\} and pH, pH to ± 0.008 using \{AT\} and pCO2, and pCO2 to ± 8 μatm using \{DIC\} and pH, with the dissociation constants of Millero et al. (2006). In spring, however, we observe a significant decline in the ability to accurately calculate the carbonate system. Lower consistency is observed with an increasing fraction of Baltic Sea water, caused by the high contribution of organic alkalinity in this water mass, not accounted for in the carbonate system calculations. Attempts to improve the internal consistency by accounting for the unconventional salinity–borate relationships in freshwater and the Baltic Sea, and through application of the new North Atlantic salinity–boron relationship (Lee et al., 2010), resulted in no significant difference in the internal consistency. [less ▲]

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See detailLa réanimation des brûlés en Belgique
ROUSSEAU, Anne-Françoise ULg

in Anesthésie, analgésie, réanimation, SAMU. Notre histoire, de 1945 aux années 2000. Tome III: Réanimation (2016)

Detailed reference viewed: 18 (5 ULg)