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Adam, Stéphane ; Ceschi, Grazia et alPoster (2001, May 18)Detailed reference viewed: 34 (0 ULg) Defict in recognition of emotional facial expression are still oresent in alcoholics after mid to long term abstinenceKornreich, C; Blairy, Sylvie ; Philippot, P et alin Journal of Studies on Alcohol (2001), 62(4), 533-542Detailed reference viewed: 21 (6 ULg) Défier l'âge, une stratégie globale.Pierard, Gérald ; Evrard, N.in Skin (2008), 11Detailed reference viewed: 12 (2 ULg) La défiguration du prototype urbain et l'image incertaine de la ville contemporaineSteinmetz, Rudy in Degrés : Revue de Synthèses à Orientation Sémiologique (2011, October), (printemps-été), 1-16Detailed reference viewed: 61 (19 ULg) Défigurer la littérature ou l’impossible témoignageServais, Christine in Cahiers Internationaux de Symbolisme (2009), 122124-123-Detailed reference viewed: 49 (7 ULg) Defining environmental migration: Why it matters so much, why it is controversial and some practical processes which may help move forwardDun, Olivia; Gemenne, François in Asylon(s) (2008), 6Detailed reference viewed: 65 (0 ULg) Defining a "reference population": no easy task.Cavalier, Etienne ; Delanaye, Pierre in Journal of Bone and Mineral Research (2009), 24(9), 1638Detailed reference viewed: 23 (8 ULg) Defining a framework of indicators to measure the social outcomes of learning.Mainguet, Christine; Baye, Ariane in Desjardins, R.; Schuller, T. (Eds.) Measuring the Effects of Education on Health and Civic Engagement. Proceedings of the Copenhagen Symposium (2006)Detailed reference viewed: 35 (2 ULg) Defining a score based on gait analysis for the longitudinal follow-up of MS patientsAzrour, Samir ; Pierard, Sébastien ; Van Droogenbroeck, Marc in Multiple Sclerosis Journal (2015, October 09), 23(S11), 408-409BACKGROUND. The project GAIMS [ECTRIMS 2013 P800] aims at developing a gait measuring system particularily suited for the clinical routine, and providing a reference database with the gait characteristics ... [more ▼]BACKGROUND. The project GAIMS [ECTRIMS 2013 P800] aims at developing a gait measuring system particularily suited for the clinical routine, and providing a reference database with the gait characteristics of many MS patients (MSP) and healthy people (HP). As the gait impairments are related to the disease progression, defining an objective and quantitative score based on the gait characteristics would be useful for the longitudinal follow-up. Based on the dataset of GAIMS and machine learning techniques (MLT), a score, well correlated with the EDSS, can be defined [Azrour et al. ESANN 2014]. OBJECTIVE. Burggraaff et al. [ECTRIMS 2014 P033] showed that paired comparisons can help human raters to better judge the state of the patients. In the same spirit, we aim at predicting the difference of EDSS between two persons or between two visits of a same person, based on clinical gait measures. We show that the pairwise comparison strategy leads to a score (Gait-Score) well correlated with the EDSS and sensitive to small modifications of the gait. METHODS. The gait of 162 HP and 72 MSP (44 with EDSS>3) has been recorded and analyzed with GAIMS. The Gait-Score is defined using the MLT of [Geurts et al. 2006]. We can compute the Gait-Score of a person by comparing him to others with known EDSS, and compute the difference of Gait-Score of a same person at two different moments. We measure the merits of the Gait-Score by the correlation between the predicted Gait-Score and the EDSS, as well as the ability to detect subtle gait deteriorations among people with ataxia induced by a low dose of alcohol (data of [Piérard et al. ESANN 2014]). RESULTS. The Gait-Score is well correlated with the EDSS (Pearson’s correlation=0.8743). Moreover, it manages to detect a gait deterioration after a small alcohol intake for 19 persons out of 24 (79% correct) which is much better than what was obtained by visual inspection of neurologists (62% according to [Piérard et al. ESANN 2014]). CONCLUSIONS. Based on the accurate gait measures provided by GAIMS, we are able to derive a Gait-Score, automatically, that is well correlated with the EDSS. Moreover, this score is able to detect subtle deteriorations of the gait caused by a low dose of alcohol. These results reinforce our conviction that the use of an automatic method based on gait analysis is very promising for the longitudinal follow-up of MS patients and the assessment of the impact of new drugs and rehabilitation programs. [less ▲]Detailed reference viewed: 99 (29 ULg) Defining additional stratigraphy in paleosismic trenches by 2D logging of magnetic susceptibility. A paleoseismic investigation near Lake Ladik, North Anatolian Fault, Turkey.Fraser, J; Hubert, Aurelia ; Vanneste, K. et alin EOS : Transactions, American Geophysical Union (2008, December), 89(53)(Fall Meet. Suppl.), 21-1942Detailed reference viewed: 9 (3 ULg) Defining Adequate Nutritional Targets in Very-Low-Birth-Weight Infants to Reduce Postnatal Growth RestrictionSENTERRE, Thibault in Neonatology (2016), 107(1), 76-78Detailed reference viewed: 21 (1 ULg) Defining Antonymy by studying Co-occurrences in ContextSteffens, Marie Poster (2011, June)Detailed reference viewed: 13 (0 ULg) Defining Antonymy by studying Co-occurrences in Context (2)Steffens, Marie Poster (2011, October)Detailed reference viewed: 13 (1 ULg) Defining multiplication for polynomials over a finite field.Rigo, Michel ; Waxweiler, LaurentE-print/Working paper (2011)Let $P$ and $Q$ be two non-zero multiplicatively independent polynomials with coefficients in a finite field $\mathbb{F}$. Adapting a result of R.~Villemaire, we show that multiplication of polynomials is ... [more ▼]Let $P$ and $Q$ be two non-zero multiplicatively independent polynomials with coefficients in a finite field $\mathbb{F}$. Adapting a result of R.~Villemaire, we show that multiplication of polynomials is a ternary relation $\{(A,B,C)\in\mathbb{F}[X]\mid A.B=C\}$ definable by a first-order formula in a suitable structure containing both functions $V_P$ and $V_Q$ where $V_A(B)$ is defined as the greatest power of $A$ dividing $B$. Such a result has to be considered in the context of a possible analogue of Cobham's theorem for sets of polynomials whose $P$-expansions are recognized by some finite automaton. [less ▲]Detailed reference viewed: 109 (9 ULg) Defining multiplication in some additive expansions of polynomial ringsPoint, Françoise; Rigo, Michel ; Waxweiler, Laurentin Communications in Algebra (2016), 44Adapting a result of R. Villemaire on expansions of Presburger arithmetic, we show how to define multiplication in some expansions of the additive reduct of certain Euclidean rings. In particular, this ... [more ▼]Adapting a result of R. Villemaire on expansions of Presburger arithmetic, we show how to define multiplication in some expansions of the additive reduct of certain Euclidean rings. In particular, this applies to polynomial rings over a finite field. [less ▲]Detailed reference viewed: 34 (11 ULg) Defining obesity in childhoodGuillaume, Michèle Conference (1997, June)Detailed reference viewed: 6 (0 ULg) Defining obesity in childhood: current practice.Guillaume, Michèle in American Journal of Clinical Nutrition (1999), 70(1), 126-30A survey of information from 26 countries was performed to examine the methods, cutoff points, and reference materials used to define obesity in childhood and adolescence. The body mass index (in kg/m2 ... [more ▼]A survey of information from 26 countries was performed to examine the methods, cutoff points, and reference materials used to define obesity in childhood and adolescence. The body mass index (in kg/m2) was used frequently, as well as several other methods. Reference materials used were often based on national surveys, although reference data from other countries were sometimes used. The data presented was often insufficient to judge the representativeness of the reference material. Cutoff points varied considerably. Available data allow neither a meaningful international estimation of the prevalence of obesity nor international comparisons. Although associated with considerable problems, this situation can be improved with an international consensus which, by necessity, will be riddled with uncertainties and compromises. [less ▲]Detailed reference viewed: 56 (9 ULg) Defining optimal brightness temperature simulation adjustment parameters to improve Metop-A/AVHRR SST over the Mediterranean SeaTomazic, Igor ; Le Borgne, Pierre; Roquete, HervéConference (2013)Sea surface temperature (SST) multispectral algorithms applied to infrared (IR) radiometer data exhibit regional biases due to the intrinsic inability of the SST algorithm to cope with the vast range of ... [more ▼]Sea surface temperature (SST) multispectral algorithms applied to infrared (IR) radiometer data exhibit regional biases due to the intrinsic inability of the SST algorithm to cope with the vast range of atmospheric types, mainly influenced by water vapor and temperature profiles. Deriving a SST correction from simulated brightness temperatures (BT), obtained by applying a Radiative Transfer Model (RTM) to Numerical Weather Prediction (NWP) atmospheric profiles and first guess SST, is one of the solutions to reduce regional biases. This solution is envisaged in the particular case of Metop-A Advanced Very High resolution (AVHRR) derived SST. Simulated BTs show errors, linked to RTM, atmospheric profiles or guess field errors. We investigated the conditions of adjusting simulated to observed BTs in the particular case of the Mediterranean Sea over almost one year. Our study led to define optimal spatio/temporal averaging parameters of the simulation observation differences, both during day and night and summer and colder season. Each BT adjustment has been evaluated by comparing the corresponding corrected AVHRR SST to the AATSR SST, that we adopted as validation reference. We obtained an optimized result across all defined conditions for a spatial smoothing of 15 deg and a temporal averaging between 3 and 5 days. Specifically, time series analyses showed that a standard deviation based criterion favors spatial smoothing above 10 deg for all temporal averaging, while a bias based criterion favors shorter temporal averaging during daytime (< 5 days) and higher spatial smoothing (>10 deg) for nighttime. This study has shown also the impact of diurnal warming both in deriving BT adjustment and in validation results, leading to more appropriate separate BT adjustment for day and night in areas and seasons of intensive diurnal warming conditions. [less ▲]Detailed reference viewed: 19 (0 ULg)