Last 7 days     Results 341-360 of 33649.   13 14 15 16 17 18 19 20 21 22 23   Constraining ALPs with linear and circular polarisation measurements of quasar lightPayez, Alexandre in 9th Patras Workshop on Axions, WIMPs and WISPs (in press)We discuss the constraints derived on the mixing of photons with light pseudoscalars using the distributions of good-quality linear and circular polarisation measurements of light from the least polarised ... [more ▼]We discuss the constraints derived on the mixing of photons with light pseudoscalars using the distributions of good-quality linear and circular polarisation measurements of light from the least polarised classes of quasars. We also provide the dependence of our limit on the average electron density in the local supercluster for nearly massless particles. [less ▲]Detailed reference viewed: 32 (19 ULg) Metacognitive components in learning to learn approachesFrenkel, Stéphanie 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 ▲]Detailed reference viewed: 59 (16 ULg) About the Uniform Hölder Continuity of Generalized Riemann FunctionBastin, Françoise ; Nicolay, Samuel ; Simons, Laurent in Mediterranean Journal of Mathematics (in press)In this paper, we study the uniform H\"{o}lder continuity of the generalized Riemann function~$R_{\alpha,\beta}$ (with $\alpha>1$ and $\beta>0$) defined by $R_{\alpha,\beta}(x)=\sum_{n=1}^{+\infty}\frac ... [more ▼]In this paper, we study the uniform H\"{o}lder continuity of the generalized Riemann function~R_{\alpha,\beta} (with \alpha>1 and \beta>0) defined by \[ R_{\alpha,\beta}(x)=\sum_{n=1}^{+\infty}\frac{\sin(\pi n^\beta x)}{n^\alpha},\quad x\in\mathbb{R},$ using its continuous wavelet transform. In particular, we show that the exponent we find is optimal. We also analyse the behaviour of~$R_{\alpha,\beta}$ as $\beta$ tends to infinity. [less ▲]Detailed reference viewed: 16 (1 ULg) Saturn’s auroral morphology and field-aligned currents during a solar wind compressionBadman, S.V.; Provan, G.; Bunce, E.J. et alin Icarus (in press)Detailed reference viewed: 14 (3 ULg) Recurrent pulsations in Saturn’s high latitude magnetosphereMitchell, D.G.; Carbary, J.F.; Bunce, E.J. et alin Icarus (in press)Detailed reference viewed: 10 (2 ULg) "Gens" isiaque et intailles. L’envers de la médailleVeymiers, Richard in Iossif, Panagiotis; de Callataÿ, François; Veymiers, Richard (Eds.) Greek Coins and their Images: "Noble" Issuers, "Humble" Users? (in press)Detailed reference viewed: 38 (1 ULg) "Die Komödie muss aus werden". Schwellenbewusstsein und Selbstreflexivität bei Arthur Schnitzler: "Die kleine Komödie" von 1895Küpper, Achim in Liebrand e.a., Claudia (Ed.) Vielheit und Einheit der Germanistik weltweit: Kongressakten. Sektionen 47, 60 und 34 (in press)Detailed reference viewed: 19 (2 ULg) Dynamiques transactionnelles de reconnaissance et professionnalisation des stagiaires : perspectives pour la formation initialeDejean, Karine in Education et Formation (in press)Cet article prend appui sur une recherche doctorale. A partir de l’analyse de récits d’expériences marquantes, à forte charge émotionnelle, rapportées par des enseignants débutants, des schémas ... [more ▼]Cet article prend appui sur une recherche doctorale. A partir de l’analyse de récits d’expériences marquantes, à forte charge émotionnelle, rapportées par des enseignants débutants, des schémas d’intelligibilité de ces situations vécues ont été construits. Ceux-ci rendent compte des transformations identitaires et émotionnelles des enseignants débutants au travers des dynamiques transactionnelles de reconnaissance. Ces résultats ouvrent des perspectives pour la formation initiale des enseignants et l’accompagnement des enseignants débutants. Les schémas d’intelligibilité pourront être utilisés dans une démarche de réflexivité pour faciliter le décodage de situations professionnelles à forte charge émotionnelle vécues par l’enseignant et l’aider à donner sens à ses expériences [less ▲]Detailed reference viewed: 12 (2 ULg) Trifles for 'Unflemings'. Teaching Dutch Literary History in Nineteenth-Century WalloniaSteyaert, Kris in Van Kalmthout, T.; Zuidervaart, H. (Eds.) The Practice of Philology in the Nineteenth-Century Netherlands (in press)Detailed reference viewed: 19 (3 ULg) Favorinos d'Arles et ses contemporains : bilinguisme et biculturalisme au IIe siècle apr. J.-C.Rochette, Bruno in Marganne, Marie-Hélène; Amato, Eugenio (Eds.) Acte de la Journée d'étude sur Favorinos d'Arles : le payrus du Vatican (Nantes, 14 novembre 2013) (in press)Detailed reference viewed: 17 (0 ULg) A Systematic Review of Cost-Effectiveness Analyses of Drugs for Postmenopausal Osteoporosis.Hiligsmann, Mickaël ; Evers, Silvia M.; Ben Sedrine, Wafa et alin PharmacoEconomics (in press)BACKGROUND: Given the limited availability of healthcare resources and the recent introduction of new anti-osteoporosis drugs, the interest in the cost effectiveness of drugs in postmenopausal ... [more ▼]BACKGROUND: Given the limited availability of healthcare resources and the recent introduction of new anti-osteoporosis drugs, the interest in the cost effectiveness of drugs in postmenopausal osteoporosis remains and even increases. OBJECTIVE: This study aims to identify all recent economic evaluations on drugs for postmenopausal osteoporosis, to critically appraise the reporting quality, and to summarize the results. METHODS: A literature search using Medline, the National Health Service Economic Evaluation database and the Cost-Effectiveness Analysis Registry was undertaken to identify original articles published between January 1, 2008 and December 31, 2013. Studies that assessed cost effectiveness of drugs in postmenopausal osteoporosis were included. The Consolidated Health Economic Evaluation Reporting Standards (CHEERS) statement was used to assess the quality of reporting of these articles. RESULTS: Of 1,794 articles identified, 39 studies fulfilled the inclusion criteria. They were conducted in 14 different countries and nine active interventions were assessed. When compared with no treatment, active osteoporotic drugs were generally cost effective in postmenopausal women aged over 60-65 years with low bone mass, especially those with prior vertebral fractures. Key drivers of cost effectiveness included individual fracture risk, medication adherence, selected comparators and country-specific analyses. Quality of reporting varied between studies with an average score of 17.9 out of 24 (range 7-21.5). CONCLUSION: This review found a substantial number of published cost-effectiveness analyses of drugs in osteoporosis in the last 6 years. Results and critical appraisal of these articles can help decision makers when prioritizing health interventions and can inform the development of future economic evaluations. [less ▲]Detailed reference viewed: 17 (4 ULg) Flow bi-stability around stay cable's sheath: Impact of roughness and circularity defect in the critical regimeBenidir, Adel; Flamand, Olivier; Gaillet, Laurent et alin Journal of Wind Engineering & Industrial Aerodynamics (in press)The stay cables on cable-stayed bridges have been the subject of considerable research in order to understand the origins of the dry galloping phenomenon. Surface irregularity is one of the last ... [more ▼]The stay cables on cable-stayed bridges have been the subject of considerable research in order to understand the origins of the dry galloping phenomenon. Surface irregularity is one of the last parameters that have not been thoroughly examined. This paper focuses on static wind tunnel tests on original High Density Polyethylene cable covers in a range of Reynolds numbers from the sub-critical regime to the critical, corresponding to values ranging from Re = 9.6x104 to Re = 3.3x105. The experiment consists in testing cable covers of various diameters in order to investigate the effect of surface irregularity (roughness and circularity defect) on the mechanism of dry galloping excitation. Previous studies reported that dry galloping is caused by the appearance of a negative pressure bubble on one side of the circular cylinder at the critical Reynolds number range, leading to a rapid drop in the drag coefficient and the appearance of a non-negligible lift force. The results of the present investigation demonstrate that there is a clear correlation between the single bubble pressure pattern and the circularity defect along the tube. They further show that surface roughness has little effect on the location of the bubble. The paper also treats the spatial and temporal correlation of the instantaneous pressure pattern along the tube with respect to the circularity defect. [less ▲]Detailed reference viewed: 18 (0 ULg) L'expérience de la valeur: Ehrenfels et MeinongDewalque, Arnaud in Boccaccini, Federico (Ed.) Voluntates sive affectus. Les passions de l'âme entre métaphysique et théorie de la connaissance (in press)A supposer que le concept de valeur soit un concept empirique, qui a sa source dans l'expérience, de quel type est l'expérience de la valeur? Dans les pages suivantes, je suggère qu’Ehrenfels et Meinong ... [more ▼]A supposer que le concept de valeur soit un concept empirique, qui a sa source dans l'expérience, de quel type est l'expérience de la valeur? Dans les pages suivantes, je suggère qu’Ehrenfels et Meinong ont apporté certaines améliorations substantielles à la position de Brentano. Ces améliorations résident essentiellement dans les deux points suivants : (1) les volitions se caractérisent par une dimension « active » ou conative qui fait défaut aux sentiments, ce qui interdit de les ranger dans une seule et même « classe » de phénomènes psychiques ; (2) le concept de valeur trouve son origine empirique dans les volitions ou les phénomènes conatifs, non dans les sentiments ou phénomènes affectifs. [less ▲]Detailed reference viewed: 24 (2 ULg) Arrêts sur images – usages et pratiques du photogrammeThonon, Jonathan in MethIS : Méthodes et Interdisciplinarité en Sciences Humaines (in press)Le photogramme est, au cinéma, la plus petite unité de prise de vue. Image fixe, unité élémentaire du film, le photogramme forme la cellule figée d’un mouvement qui se reconstitue sous l’effet d’un ... [more ▼]Le photogramme est, au cinéma, la plus petite unité de prise de vue. Image fixe, unité élémentaire du film, le photogramme forme la cellule figée d’un mouvement qui se reconstitue sous l’effet d’un défilement réglé (24 photogrammes/seconde) par le dispositif technique du cinéma. Image paradoxale en ce qu’elle reste invisible au spectateur malgré sa force iconique, le photogramme trouve cependant, dans le flux qui le conduit insensiblement à la disparition, certaines zones de visibilité qui en révèlent le caractère à la fois fragile et intensif. Nous allons donc envisager certaines pratiques ou certains usages du photogramme cinématographique, tout en essayant de dégager, au départ de ces pratiques, les éléments d’une théorie du photogramme, que Roland Barthes et Sylvie Pierre appelaient déjà de leurs vœux. Des protos-photogrammes et de leur usage scientifique chez Muybridge et Marey, aux usages artistiques contemporains, en passant par des pratiques publicitaires, promotionnelles ou analytiques, nous allons voir que le photogramme reste un objet singulier. [less ▲]Detailed reference viewed: 33 (2 ULg) Determination of arsenic (III) at a nano gold modified solid carbon paste electrodeSakira, Abdoul Karim; Somé, Issa Touridomon; Ziemons, Eric et alin Electroanalysis (in press)A selective and sensitive electroanalytical method was developed for arsenic determination based on a nanogold (AuNP) modified solid carbon paste work- ing electrode (SCPE) modified in two steps (i ... [more ▼]A selective and sensitive electroanalytical method was developed for arsenic determination based on a nanogold (AuNP) modified solid carbon paste work- ing electrode (SCPE) modified in two steps (i) physisorp- tion and (ii) additional electrodeposition of nanogold par- ticles in the presence of iodide. Copper(II) interference was solved by covering the gold layer by a self assembled mono layer (SAM) of glutathione. Using DPASV a linear response of the signal was obtained as a function of As(III) in the concentration range 0.05–20mM (4– 1498 ppb) with a limit of detection of 0.01 mM (0.9 ppb). Sample stirring and degassing were not needed. Applica- tion to the determination of arsenic(III) and (V) in un- derground water samples from Burkina Faso was success- fully achieved. [less ▲]Detailed reference viewed: 23 (7 ULg) High strength steel in seismic resistant building frames (HSS-SERF)Dubina, Dan; Vulcu, Cristian; Stratan, Aurel et alBook published by Commission Européenne (in press)The aim of “HSS-SERF” project was to investigate and evaluate the seismic performance of dual-steel building frames, realized from two different steel grades: Mild Carbon Steel (MCS) and High Strength ... [more ▼]The aim of “HSS-SERF” project was to investigate and evaluate the seismic performance of dual-steel building frames, realized from two different steel grades: Mild Carbon Steel (MCS) and High Strength Steel (HSS). A comprehensive set of dual-steel frames (moment resisting, concentrically and eccentrically braced) were designed, which allowed the identification of realistic member sizes for both MCS and HSS components. Several practical solutions for bolted and welded beam-to-column joints were identified and designed. Further, an extensive numerical program was carried out for the seismic performance evaluation of frames. The ductility and over-strength demands, and q-factors associated with different performance levels were evaluated. Furthermore, experimental and numerical investigations were carried out on joint assemblies and components. Guidelines were elaborated for the conceptual design and PBD of dual-steel frames under seismic actions, and the technical and economic efficiency of dualsteel structures vs. conventional ones were finally evaluated. The main outcomes of the project consist in: (i) development and characterisation in terms of global ductility and over-strength demands of dual-steel frames with composite columns (innovative solutions in European context); (ii) development of design recommendations; (iii) proposal of innovative solutions for beam-to-column joints with composite columns; (iv) recommendation for weld details and appropriate component method design approaches; (v) evaluation of technical and economic efficiency of the dual-steel approach. [less ▲]Detailed reference viewed: 80 (11 ULg) Neoformed mineral phases during clay ceramic firingEl Ouahabi, Meriam ; Daoudi, Lachen; Hatert, Frédéric et alin Clays and Clay Minerals (in press)Ceramic clays are one of the most complicated ceramic systems because of the very complex relationship between the behavior of minerals during the ceramic processing and the transformations during heating ... [more ▼]Ceramic clays are one of the most complicated ceramic systems because of the very complex relationship between the behavior of minerals during the ceramic processing and the transformations during heating. A major challenge is to predict the phase transformations in clay ceramics. The aims are to establish reference data of ceramics products that can be formed based on the mineralogical composition of the local raw materials. These data, in turn, can be compared with the archaeological ceramics in order to study their origins. The mineralogical compositions and transformations during the firing (550 to 1100ºC under oxidizing conditions) of seven clayey materials sampled from the main clay deposits of Northern Morocco were evaluated by X-ray powder diffraction. Two groups of clays were evidenced according to the type of neoformed high-temperature minerals: non-calcareous clays and calcareous clays. For the non-calcareous raw materials, spinel is produced at 950°C. Cristobalite and mullite were formed above 1000ºC from clays that contain illite, kaolinite and chlorite. In clays containing vermiculite and high amount of chlorite, hematite was formed from 950°C. Firing of calcareous clays at temperatures > 950ºC yielded Ca-silicates (diopside, gehlenite and wollastonite), spinel, cristobalite, hematite and feldspars. Mullite may also form in the calcareous clay products, when the carbonates content exceeds 10%. [less ▲]Detailed reference viewed: 22 (7 ULg) Transient small-scale structure in the main auroral emission at JupiterPalmaerts, Benjamin ; Radioti, Aikaterini ; Grodent, Denis et alin Journal of Geophysical Research. Space Physics (in press)Detailed reference viewed: 15 (5 ULg) Jupiter's equatorward auroral features: possible signatures of magnetospheric injectionsDumont, Maïté ; Grodent, Denis ; Radioti, Aikaterini et alin Journal of Geophysical Research - Space Physics. (in press)The present study investigates the characteristics of ultraviolet auroral features located equatorward of the main emission appearing in Hubble Space Telescope images of the northern and southern Jovian ... [more ▼]The present study investigates the characteristics of ultraviolet auroral features located equatorward of the main emission appearing in Hubble Space Telescope images of the northern and southern Jovian hemispheres obtained in 2000-2007. On average, one feature is observed every day, but several auroral structures are occasionally seen over a wide range of local times in the same image. Several properties of these features are analyzed, such as their location, emitted power and lifetime. Additionally, we magnetically map the auroral features to the equatorial plane using the VIPAL model in order to compare their observed properties with those of magnetospheric injections detected by the Galileo spacecraft. The equatorward auroral features show up between the Io footpath and the main auroral emission, at all System III longitudes, in agreement with Galileo measurements. Moreover, we compare the magnetic flux associated with these features with estimates of the out-going flux related to the radial transport of plasma in the Jovian magnetosphere and we find that they could account for at least one third of this flux. This comparative study shows that the auroral features under study are most probably related to magnetospheric injections and thus sheds light on the processes involved in the magnetosphere-ionosphere dynamics. [less ▲]Detailed reference viewed: 13 (2 ULg) Thin film superconducting shieldsClaassen, John; Osofsky, Michael; Namburi, Devendra et alin IEEE Transactions on Applied Superconductivity (in press)To date, magnetic shields utilizing high-temperature superconductor materials mostly comprise bulk materials, usually shaped into a cylinder and then heat treated. We analyze the potential of thin-film ... [more ▼]To date, magnetic shields utilizing high-temperature superconductor materials mostly comprise bulk materials, usually shaped into a cylinder and then heat treated. We analyze the potential of thin-film technology, whereby a layer of superconductor is deposited on a substrate, to fabricate magnetic shields. Films deposited on a curved surface are inevitably granular, leading to reduced critical current density compared with crystalline films. This limits the maximum field that can be screened. Granular films also have an enhanced penetration depth compared with the bulk value, which determines the maximum possible screening at applied fields below the maximum.We demonstrate the utility of a mutual inductancemeasurement to evaluate small flat test samples of a granular film for their potential as a shielding material in a more complex geometry. Thismeasurement predicts both themaximum magnetic field that can be screened and the residual leakage at fields below the maximum. The tested film was produced by the Electrophoretic deposition of YBCO on a silver substrate. The maximum screening field was comparable with that obtained for a similar film on a cylindrical substrate. We also show comparable results from a crystalline YBCO film. [less ▲]Detailed reference viewed: 13 (1 ULg)