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See detailEvaluating model simulations of 20th century sea-level rise. Part 1: Global mean sea-level change
Slangen, A.; Meyssignac, B.; Agosta, Cécile ULiege et al

in Journal of Climate (2017)

Sea-level change is one of the major consequences of climate change and is projected to affect coastal communities around the world. Here, we compare Global Mean Sea-Level (GMSL) change estimated by 12 ... [more ▼]

Sea-level change is one of the major consequences of climate change and is projected to affect coastal communities around the world. Here, we compare Global Mean Sea-Level (GMSL) change estimated by 12 climate models from the 5th phase of the World Climate Research Programme’s Climate Model Intercomparison Project (CMIP5) to observational estimates for the period 1900-2015. We analyse observed and simulated individual contributions to GMSL change (thermal expansion, glacier mass change, ice sheet mass change, landwater storage change) and compare the summed simulated contributions to observed GMSL change over the period 1900-2007 using tide gauge reconstructions, and over the period 1993-2015 using satellite altimetry estimates. The model-simulated contributions allow us to explain 50 ± 30% (uncertainties 1.65σ unless indicated otherwise) of the mean observed change from 1901-1920 to 1988-2007. Based on attributable biases between observations and models, we propose to add a number of corrections, which result in an improved explanation of 75 ± 38% of the observed change. For the satellite era (1993-1997 to 2011-2015) we find an improved budget closure of 102 ± 33% (105 ± 35% when including the proposed bias corrections). Simulated decadal trends over the 20th century increase, both in the thermal expansion and the combined mass contributions (glaciers, ice sheets and landwater storage). The mass components explain the majority of sea-level rise over the 20th century, but the thermal expansion has increasingly contributed to sea-level rise, starting from 1910 onwards and in 2015 accounting for 46% of the total simulated sea-level change. [less ▲]

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See detailEvaluating Model Simulations of Twentieth-Century Sea Level Rise. Part 2: Regional Sea-Level Changes
Meyssignac, B.; Slangen, A.; Melet, A. et al

in Journal of Climate (2017), in press

Twentieth century regional sea-level changes are estimated from 12 climate models from the 5th phase of the Climate Model Intercomparison Project (CMIP5). The output of the CMIP5 climate model simulations ... [more ▼]

Twentieth century regional sea-level changes are estimated from 12 climate models from the 5th phase of the Climate Model Intercomparison Project (CMIP5). The output of the CMIP5 climate model simulations were used to calculate the global and regional sea-level changes associated with dynamic sea level, atmospheric loading, glacier mass changes and ice sheet surface mass balance contributions. The contribution from groundwater depletion, reservoir storage and dynamic ice sheet mass changes are estimated from observations as they are not simulated by climate models. All contributions are summed, including the GIA contribution, and compared to observational estimates from 27 tide gauge records over the twentieth century (1900-2015). We find a general agreement between the simulated sea level and tide gauge records in terms of inter-annual to multi-decadal variability over 1900-2015. But climate models tend to systematically underestimate the observed sea-level trends, particularly in the first half of the 20th century. The corrections based on attributable biases between observations and models that have been identified in the part-1-paper, result in an improved explanation of the spatial variability in observed sea-level trends by climate models. Climate models show that the spatial variability in sea-level trends observed by tide-gauge records is dominated by the GIA contribution and the steric contribution over 1900-2015. Climate models also show that it is important to include all contributions to sea-level changes as they cause significant local deviations; for example, the groundwater depletion around India which is responsible for the low 20th century sea-level rise in the region. [less ▲]

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See detailEvaluating Portfolio Performance: Reconciling Asset Selection and Market Timing
Cavé, Arnaud; Hübner, Georges ULiege; Lejeune, Thomas ULiege

in Baker, H. Kent; Filbeck, Georges (Eds.) Portfolio Theory and Management (2013)

This chapter examines the performance measurement of mutual funds when both security selection and market timing management skills are considered. In an option replication approach, linear and quadratic ... [more ▼]

This chapter examines the performance measurement of mutual funds when both security selection and market timing management skills are considered. In an option replication approach, linear and quadratic coefficients of the Treynor and Mazuy regression are combined to assess performance in presence of market timing. This new correction has the potential to overcome the “artificial timing” bias and delivers particularly encouraging results on a sample of 1,413 U.S. mutual funds selected for an empirical analysis. Unlike alternative approaches proposed in the literature, most of positive market timers seem to be rewarded for the convexity they add to their portfolio, while negative market timers are penalized, and a correlation between abnormal performance and the convexity parameter is found. [less ▲]

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See detailEvaluating product temperature during thin bed drying.
Bera, François ULiege

in Berichte Der Bundesforschungsanstalt Für Ernährung (1987, February)

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See detailEvaluating radical conservation futures: strategies for assessing the potential for Eurasian lynx in the Benelux countries
Bouyer, Yaëlle ULiege; Poncin, Pascal ULiege; Beudels-Jamar, Roseline et al

Poster (2011, July 08)

Tolerance of anthropic environment has allowed large carnivores to recolonize and to be reintroduced within Europe in the last forty years. This indicates that, even in areas where the return of large ... [more ▼]

Tolerance of anthropic environment has allowed large carnivores to recolonize and to be reintroduced within Europe in the last forty years. This indicates that, even in areas where the return of large carnivores seems unlikely, their presence and establishment is possible, even in highly modified environments. In the current context of the return of large carnivores in Europe, there is a need for scientific conservation tools to assess the full potential and consequences of the return of large carnivores in Europe, and in particular to evaluate potential impact on game and livestock. Today, the return of the Eurasian Lynx (Lynx lynx) in areas where it has been absent for long periods is becoming increasingly probable, and this requires further investigations. Three main lines of research will be particularly important: the use of habitat by Eurasian Lynx, the effect of habitat on predation behavior, and potential sources of conflict with human populations. The research project will address fine scale habitat use, the effect of prey‘s spatial variation on Lynx predation behavior, the use of different statistical methods to estimate Lynx‘s viability in various habitats and landscape, and a review of current conflicts throughout Europe. Results should allow better understanding of the Lynx redeployment potentials in lowland Western Europe [less ▲]

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See detailEvaluating risk in unstable angina: role of pharmacological stress echocardiography.
Pierard, Luc ULiege

in European heart journal (2000), 21(13), 1041-3

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See detailEvaluating SGLT2 inhibitors for type 2 diabetes: pharmacokinetic and toxicological considerations.
Scheen, André ULiege

in Expert opinion on drug metabolism & toxicology (2014)

Introduction: Inhibitors of sodium-glucose cotransporters type 2 (SGLT2), which increase urinary glucose excretion independently of insulin, are proposed as a novel approach for the management of type 2 ... [more ▼]

Introduction: Inhibitors of sodium-glucose cotransporters type 2 (SGLT2), which increase urinary glucose excretion independently of insulin, are proposed as a novel approach for the management of type 2 diabetes mellitus (T2DM). Areas covered: An extensive literature search was performed to analyze the pharmacokinetic characteristics, toxicological issues and safety concerns of SGLT2 inhibitors in humans. This review focuses on three compounds (dapagliflozin, canagliflozin, empagliflozin) with results obtained in healthy volunteers (including drug-drug interactions), patients with T2DM (single dose and multiple doses) and special populations (those with renal or hepatic impairment). Expert opinion: The three pharmacological agents share an excellent oral bioavailability, long half-life allowing once-daily administration, low accumulation index and renal clearance, the absence of active metabolites and a limited propensity to drug-drug interactions. No clinically relevant changes in pharmacokinetic parameters were observed in T2DM patients or in patients with mild/moderate renal or hepatic impairment. Adverse events are a slightly increased incidence of mycotic genital and rare benign urinary infections. SGLT2 inhibitors have the potential to reduce several cardiovascular risk factors, and cardiovascular outcome trials are currently ongoing. The best positioning of SGLT2 inhibitors in the armamentarium for treating T2DM is still a matter of debate. [less ▲]

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See detailEvaluating somatic cell scores with a Bayesian Gaussian linear state-space model.
Detilleux, Johann ULiege; Theron, Léonard ULiege; Reding, E. et al

in Animal (2014), 8(3), 477-83

Because accurate characterization of health state is important for managing dairy herds, we propose to validate the use of a linear state-space model (LSSM) for evaluating monthly somatic cell scores ... [more ▼]

Because accurate characterization of health state is important for managing dairy herds, we propose to validate the use of a linear state-space model (LSSM) for evaluating monthly somatic cell scores (SCSs). To do so, we retrieved SCS from a dairy database and collected reports on clinical mastitis collected in 20 farms, during the period from January 2008 to December 2011 in the Walloon region of Belgium. The dependent variable was the SCS, and the independent variables were the number of days from calving, year of calving and parity. The LSSM also incorporated an error-free underlying variable that described the trend across time as a function of previous clinical and subclinical status. We computed the mean sum of squared differences between observed SCS and median values of the posterior SCS distribution and constructed the receiver operating characteristic (ROC) curve for SCS thresholds going from 0 to 6. Our results show SCS estimates are close to observed SCS and area under the ROC curve is higher than 90%. We discuss the meaning of the parameters in light of our current knowledge of the disease and propose methods to incorporate, in LSSM, this knowledge often expressed in the form of ordinary differential equations. [less ▲]

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See detailEvaluating the attainment of LOGO objectives in a constructivist approach
Denis, Brigitte ULiege

in Schuyten, Gilberte (Ed.) Proceedings : Second European LOGO conference, Gent, August 1989 (1989)

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See detailEVALUATING THE CHEMICAL SAFETY OF EDIBLE INSECTS
Poma, G; Cuykx, M; Amato, E et al

in Organohalogen Compounds (2016, August), 78

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See detailEvaluating the effectiveness of a 10-years old great ape conservation project in Cameroon
Tagg, Nikki; Petre, Charles-Albert ULiege; Willie, Jacob

in Pan Africa News (2011), 18(2), 21-23

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See detailEvaluating the Impact of Different Seasons on the Air Quality Inside Some Pig Farms in Van Giang District of Hung Yen Province
Nguyen Van Duy, ULiege; Vu Dinh, Ton; Le Huu, Hieu

in Journal of Sciences and Development (2010), 8(6), 959-968

This study was carried out at 3 pig farms in Van Giang district of Hung Yen province in winter and summer. Its aims to evaluate the influences of different seasons on the air quality inside the pigsty ... [more ▼]

This study was carried out at 3 pig farms in Van Giang district of Hung Yen province in winter and summer. Its aims to evaluate the influences of different seasons on the air quality inside the pigsty. The air quality was determined by some criterias: temperature, humidity, air speed, the concentration of CO2, H2S and NH3 around the pig house. Results of this research provide farmers with basic knowledge not only about designing and building pig cages but also rasing pigs suitably with different seasons. The results showed that, in both summer and winter, the value of temperature and humidity in pigsites was under permissible limits. Meanwhile, the concentration of CO2, H2S and NH3 were higher than permitted values. In summer, the the concentration of CO2, H2S, NH3 was higher than standard values (3.6 - 5.0; 2 - 26; 1.5 - 8 times respectively). In winter, the amount of these gases were higher the standard values (4.6 - 12.5; 2 - 26; 8.5 - 13.5 times respectively). In winter, the air quality was not good as that in summer with higher level poisonous gases (CO2: 1.2 to 1.5; H2S: 1.1 to 10; NH3: 1.1 to 6.3 times as compared with those in summer). Seasonal factor affected remarkably on indoor climate of pig house. [less ▲]

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See detailEvaluating the impact of soil conservation measures on soil organic carbon at the farm scale
Pezzuolo, Andrea; Dumont, Benjamin ULiege; Sartori, Luigi et al

in Computers & Electronics in Agriculture (2017), 135

No-tillage (NT) is considered the least invasive conservation agriculture technique and has shown to be the effective in increasing soil C stocks, and reducing losses compared to others tillage systems ... [more ▼]

No-tillage (NT) is considered the least invasive conservation agriculture technique and has shown to be the effective in increasing soil C stocks, and reducing losses compared to others tillage systems. In Italy, the Veneto Region was the first to establish a subsidies scheme aimed at promoting the adoption of NT practices. This program encourages farmers to perform direct seeding, alternate autumn and winter crops and maintain soil cover throughout the year by leaving crop residues or sowing cover crops. The goals of this study were to: (i) compare the CO2 emission and soil C sequestration patterns of agricultural soils under CT and NT management practices in the Veneto region and (ii) analyse the potential mid-term benefits (2010–2025) of NT management in terms of soil organic C dynamics and CO2 balance. Agronomic data and soil organic carbon levels were measured from 2010 to 2014 in eight farms in the Veneto region that had adopted CT and NT techniques. Field measurements were used to calibrate first and then validate the SALUS model to compare the mid-term impact of CT and NT practices using climate projections. SOC carbon pools in the model were initialized using the procedure described in Basso et al. (2011c). This is the first study to employ a model using such an extensive dataset at the farm level to assess the CT and NT strategies within this region. Results of this research will assist farmers and policy makers in the region to define the tillage systems most suited to improve soil C stocks and thereby minimize CO2 emissions from agricultural soils. Overall, simulations indicated that SOC stocks can decrease under both CT and NT regimes, however SOC oxidation rates were substantially lower under NT. Critically, the greatest reduction in CO2 emission was observed when NT was adopted in soil with high levels of SOM. This highlights the benefits of NT adoption in terms of soil fertility preservation and CO2 emissions mitigation. [less ▲]

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See detailEvaluating the impacts of a network on healthy eating promotion practices in schools
Vandoorne, Chantal ULiege; Van Hoye, Aurélie ULiege

in Archives of Public Health (2009), 67(Supplement 2), 72-73

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See detailEvaluating the Performance of Courts in France and Belgium : A Difficult Circle to Square
Ficet, Joël ULiege

Conference (2009, September 09)

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See detailEvaluating the performance of short-term heat storage in alluvial aquifer with 4D electrical resistivity tomography and hydrological monitoring
Robert, Tanguy; Paulus, Claire; Bolly, Pierre-Yves et al

Poster (2015, December 14)

In the context of energy demand side management (DSM), energy storage solutions are needed to stock energy during high production periods and recover energy during high demand periods. Among currently ... [more ▼]

In the context of energy demand side management (DSM), energy storage solutions are needed to stock energy during high production periods and recover energy during high demand periods. Among currently studied solutions, storing energy in the subsurface through heat pumps and/or exchangers (thermal energy storage) is relatively simple with low investment costs. However, the design and functioning of such systems have strong interconnections with the geology of the site which may be complex and heterogeneous, making predictions difficult. In this context, local temperature measurements are necessary but not sufficient to model heat flow and transport in the subsurface. Electrical resistivity tomography (ERT) provides spatially distributed information on the temperature distribution in the subsurface. In this study, we monitored, with 4D ERT combined with multiple hydrological measurements in available wells, a short-term heat storage experiment in a confined alluvial aquifer. We injected heated water (ΔT=30K) during 6 hours with a rate of 3 m³/h, stored during 3 days, and then we pumped it back to estimate the energy balance. We collected ERT data sets using 9 parallel profiles of 21 electrodes and cross-lines measurements. Inversion results clearly show the ability of ERT to delimit the thermal plume growth during injection, the diffusion and decrease of temperature during storage, and the decrease in size after pumping. Quantitative interpretation of ERT is difficult at this stage due to strong spatial variations of the total dissolved solid content in the aquifer, due to historical chloride contamination of the site. Energy balance shows that up to 75% of the energy can be easily recovered with an adapted strategy in the context of DSM. Short-term heat storage in alluvial aquifer is efficient and ERT is a valuable tool to image and estimate the temperature distribution in the subsurface. [less ▲]

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