A new approach for Guaranteed ellipsoidal state estimation

The 19th World Congress of the International Federation of Automatic Control 2014. Cape Town, SudáfricaThis paper proposes a new ellipsoid-based guaranteed state estimation approach for linear discrete-time systems with bounded perturbations and bounded measurement noise. This approach is based on the minimization of the radius of the ellipsoidal state estimation set. Firstly, the ellipsoidal state estimation is computed by off-line solving a Linear Matrix Inequality optimization problem. Secondly, a new online method is developed in order to improve the accuracy of the estimation but it leads to an increase of the online computation load. A new scaling technique is proposed to reduce the computation time, while keeping a good accuracy of the state estimation. An illustrative example is analyzed in order to show the advantages of the proposed approach

Comparison between two state estimation techniqueds for linear systems

20th World Congress of the International Federation of Automatic Control, Jul 2017, Toulouse, FranceThis paper presents a comparison in terms of accuracy and complexity between two approaches used for state estimation of linear systems: a classic Kalman filter and a guaranteed set-membership state estimation technique. The main goal of this paper is to analyze the advantages of these techniques and to combine them in the future in a new accurate and simple extension that handles system uncertainties and chance constraints. Two academic examples illustrate the main differences between the compared techniques

Atypical coordination of cortical oscillations in response to speech in autism.

Subjects with autism often show language difficulties, but it is unclear how they relate to neurophysiological anomalies of cortical speech processing. We used combined EEG and fMRI in 13 subjects with autism and 13 control participants and show that in autism, gamma and theta cortical activity do not engage synergistically in response to speech. Theta activity in left auditory cortex fails to track speech modulations, and to down-regulate gamma oscillations in the group with autism. This deficit predicts the severity of both verbal impairment and autism symptoms in the affected sample. Finally, we found that oscillation-based connectivity between auditory and other language cortices is altered in autism. These results suggest that the verbal disorder in autism could be associated with an altered balance of slow and fast auditory oscillations, and that this anomaly could compromise the mapping between sensory input and higher-level cognitive representations

Étude comparative de l’activité antispasmodique de l’extrait aqueux d’Ajuga iva L. et de l’ibuprofène chez les souris

Ajuga iva (L.) Schreber, utilisé dans la pharmacopée traditionnelle, pour des troubles gastro-intestinaux, le diabète et comme  hypocholestérolémiante. L’étude pharmacologique de l’extrait aqueux d’Ajuga iva (Lamiaceae) a été effectuée à l’aide de modèles animaux. L’évaluation de l’activité analgésique, montre que l’extrait aqueux à 0,4g/ L de cette plante induit une diminution du nombre de crampes abdominales dans le test de writhing provoqué par l’acide acétique à 1% Ajuga iva a un effet analgésique plus efficace que celui de l’ibuprofène, en effet ce dernier provoque une inhibition de la douleur de 77,53±3,80 % et celui de ,l’extrait aqueux d’Ajuga iva de 85,39±4,29 % pour la même concentration (200mg/kg). L’extrait aqueux d’Ajuga iva a des propriétés analgésiques qui justifient son usage traditionnel. Les effets  thérapeutiques sont induits par divers composés révélés lors du tri phyto chimique de cette plante (alcaloïdes, flavonoïdes, polyphénols, saponosides, et tanins catéchiques) qui constituent la base scientifique de l’utilisation thérapeutique traditionnelle de la plante étudiée.Mots- clés : Ajuga iva L., extrait aqueux, effet analgésique, ibuprofène, writhing test

Activité hypoglycémique de l’extrait aqueux d’Ajuga iva L. schreber chez les rats diabétiques induite par l’alloxane

Ajuga iva (L) schreber est utilisé en médecine traditionnelle dans le traitement du diabète. Le but de cette étude était d'évaluer l'activité l'hypoglycémique de l'extrait aqueux de la partie aérienne de cette plante sur un modèle animal. L’extrait a été préparé dans de l'eau bouillante et le filtrat aqueux a été lyophilisé et conservé. A iva est une plante capable d’induire une hypoglycémie chez les rats diabétiques. Alloxane a été administré en dose unique (150 mg poids corporel / kg) par injection intra-péritonéal. Des rats femelles Wistar (n = 30) pesant 200 ± 2g divisés en 5 groupes, ont reçu des doses différentes (0,05 g/mL, 0,10 g/mL, 0,15 g/mL) par voie orale. Cette opération est répétée tous les jours pendant 3 semaines. La glycémie a été déterminée par la méthode enzymatique colorimétrique par spectrophotométrie. Seul l’extrait aqueux à forte dose a diminuée le taux du glucose sanguins de 62, 96±7, 30% comparativement au groupe control. Dans la présente étude, le potentiel hypoglycémiant de A iva est démontré chez le rat. Ces résultats confirment l'utilisation de cette plante comme antidiabétique.Mots-clés : Ajuga iva, extrait aqueux, alloxane, activité hypoglycémique, diabète.Hypoglycemic Activity of the aqueous extract of Ajuga iva L. in diabetic rats induced by alloxanAjuga iva (L) schreber is used in traditional medicine in the treatment of diabetes, The purpose of this study was to evaluate hypoglycemic effect of the aqueous extract of aerial parts of this plant on animal model. The extract was prepared in boiling water and the aqueous filtrate was lyophilized and conserved. A iva is a plant capable of inducing hypoglycemia in diabetic rats. Alloxan was administered as a single dose (150 mg body weight / kg) injection intaperitoneal injection. Female Wistar rats (n = 30) weighing 200 ± 2g divided into 5 groups received different doses (0.05 GML-1, 0.10 GML-1, 0.15 g / mL) by oral route. This is repeated every day for three weeks. Blood glucose was determined by the enzymatic and colorimetric method by spectrophotometry. Only the aqueous extract high dose rate decreased blood glucose of 62, 96 ± 7, 30% compared with the control group. In the present study, the hypoglycemic potential of the A iva was demonstrated in rats. These results give support to the traditional use of this plant as antidiabetic herbal medicine.Keywords : Ajuga iva L, aqueous extract, alloxan, diabetes, hypoglycemic activity

Effect of Ramadan fasting on glucose, glycosylated haemoglobin, insulin, lipids and proteinous concentrations in women with non-insulin dependent diabetes mellitus

The objective of this study was to investigate the effect of Ramadan fasting on body mass index (BMI) and on certain biochemical parameters of serum in women patients with non-insulin dependent diabetes mellitus. Sixty-six subjects from 3 regions located in the west of Algeria participated in this study. All participating patients were studied a week before Ramadan and at the third week of Ramadan fasting. No statistically significant fluctuations were noted in BMI either during Ramadan or in nonfasting days. However, the rates of glycosylated haemoglobin (HbA1c) decreased slightly (P < 0.05) during the last week of the month of Ramadan among the diabetic patients. Also, the glucose levelswere significantly (p < 0.05) higher in the serum subjects of patients during the fasting period when compared to the level before Ramadan. This could be due to the significant decrease (P < 0.05) of insulin levels in patients during the fasting period. The rates of HDL cholesterol recorded in the blood among patients rose significantly (p < 0.05) during the Ramadan than during the non-fasting period. The statistically significant increase in HDL-cholesterol explains clearly the beneficial effect of Ramadan fasting on diabetic’s serum lipids. Moreover, serum total cholesterol, triglyceride, LDL cholesterol and VLDL cholesterol levels decreased significantly (p < 0.05) during the third week of Ramadan than nonfasting day. As for proteinous compounds (protein, creatin and urea), their plasmatic rates all increased substantially (p < 0.05) in patients during the fasting period of the month of Ramadan

Étude phytochimique et évaluation de l’activité anti-oxydante de Thymus CIliatus ssp. Coloratus

Thymus ciliatus ssp. Coloratus, plante aromatique, spontanée et répandue en régions méditerranéennes et dans le nord de l’Algérie est très utilisée par les populations locales pour ses vertus médicinales. Les tests phytochimiques appliqués au Thymus ciliatus ssp coloratus ont montré la présence de quelques familles de composés chimiques et notamment les flavonoïdes. L'activité antioxydante in vitro de l’extrait de flavonoïdes a été évaluée par la technique de réduction du fer « FRAP » (ferric reducing antioxydant power) et par le test de DPPH. La première méthode a montré que la fraction acétate d’éthyle de la partie aérienne a une capacité à réduire le fer plus marquée que celles de l’acide ascorbique et le BHA et que celle des racines, est nettement inférieure. Quant aux fractions butanoliques des flavonoïdes de la partie aérienne et des racines, elles ont une capacité à réduire le fer largement inférieure à celles de l’acide ascorbique et le BHA. L’activité antioxydante, obtenue par la second procédé et relative à la fraction acétate d’éthyle des flavonoïdes de la partie aérienne de la plante est plus importante (I.C₅₀=0,85 mg/mL) que celles obtenues à partir d’antioxydants utilisés dans les industries alimentaire et pharmaceutique en l’occurrence l’acide ascorbique (I.C₅₀ = 1,12 mg/mL) et le BHA (I.C₅₀=1,61 mg/mL).Mots-clés : Thymus coloratus, activité antioxydant, flavonoïde, FRAP, DPPH.Phytochemical study and evaluation of the antioxidant activity of thymus ciliatus ssp. Coloratus Thymus ciliatus ssp. coloratus, aromatic plant, spontaneous and widespread in the Mediterranean and in northern Algeria is widely used by local people for its medicinal properties. Phytochemical tests applied for Thymus sciliatus ssp coloratus showed the presence of several families of chemical compounds including flavonoïds. The in vitro antioxidant activity of flavonoïds extract was evaluated by the iron reduction technique "FRAP" (ferric reducing antioxidant power) and DPPH test. The first method showed that the ethyl acetate fraction of the aerial part has an ability to reduce the iron greater than ascorbic acid and BHA and the roots, is significantly lower. As for butanol fractions of flavonoïds from the aerial part and roots, they have an ability to reduce iron significantly lower than those of ascorbic acid and BHA. The antioxidant activity obtained by the second method and on the ethyl acetate fraction of flavonoïds from the aerial part of the plant is more important (I.C₅₀ = 0.85 mg / mL) than those obtained from 'antioxidants used in food and pharmaceutical industries namely ascorbic acid (I.C₅₀ = 1.12 mg / mL) and BHA (I.C₅₀ = 1.61 mg / mL).Keywords : Thymus coloratus, antioxidant activity, flavonoïd, FRAP, DPPH

Converging on human-centred industry, resilient processes, and sustainable outcomes in asset management frameworks

Abstract The objective of increasing productivity while optimizing operational and organizational processes has focused Industry 4.0 (I4.0) on technological development without considering the impact of technology on people and the impact of mass production on the environment. These impacts have led to growing concerns about climate change and complex global risks. A new vision of the industry, called Industry 5.0 (I5.0), has emerged within the scientific community. This human-centred industry appears to be a bold turn from individual technologies to a systematic approach that enables industry to achieve societal and environmental goals beyond economic growth. Under this approach, the question is no longer whether asset management should change, but what that transformation should look like. This paper identifies areas for improvement of the asset management process and presents a framework that incorporates the core values of I5.0 within the overall asset management framework, in which the core principles remain, and the new technologies are the enabling functions. Though the primary focus of this paper on manufacturing and industrial systems, many of its concept and ideas are also relevant to asset management in the public sector infrastructure systems

Etude de l'effet de l'huile (nigella sativa)sur l'evolutin ponderale ,bilan nutritionnel et bilan lipidique chez les rats Wistar rendu obese

obesite est un probleme majeur de sante publique en ce 21eme siecles et la consommation d'aliments hypercaloriques riche en graisse et hydrate de carbone est considerer comme un facteur important,contribuant a l'exes de poid et a l'obesite ,les recherchers ecentes ont montres q'une supplimentation en acide gras polyinsatures (AGPI)tend a corriger et/ou a prevenir l'obesite . de ce fait,l'autre etude a porté sur l'incorporation,a un regime hypergras,l'huile fixe des graines de nigelle (nigella sativa l.)tres riche en AGPI (88,5%