170,921 research outputs found
Henry Bauchau et Jean El Mouhouv Amrouche: histoire d'une amitié poétique
No full textNell'ambito dell'interesse di ricerca per i rapporti tra letteratura e mondo editoriale, il lavoro indaga i rapporti di collaborazione e di amicizia tra Henry Bauchau e Jean El Mouhouv Amrouche, con particolare riferimento all'esperienza comune, a metà degli anni Quaranta, all'interno della casa editrice Charlot, nata in Algeria e successivamente trasferitasi a Parigi. Lo studio, che nasce da importanti ricerche d'archivio, cerca di far luce sugli anni che precedono l'esordio letterario di Bauchau, e che sono stati profondamente segnati dall'esperienza editoriale e dai rapporti con l'autore algerino Amrouche
Exterior problems in the half-space for the Laplace operator in weighted Sobolev spaces
No full textAbstractThe purpose of this work is to solve exterior problems in the half-space for the Laplace operator. We give existence and unicity results in weighted Lp's theory with 1<p<∞. This paper extends the studies done in [C. Amrouche, V. Girault, J. Giroire, Dirichlet and Neumann exterior problems for the n-dimensional Laplace operator, an approach in weighted Sobolev spaces, J. Math. Pures Appl. 76 (1) (1997) 55–81] with Dirichlet and Neumann conditions
Mixed exterior Laplace's problem
No full textAbstractIn [C. Amrouche, V. Girault, J. Giroire, Dirichlet and Neumann exterior problems for the n-dimensional Laplace operator. An approach in weighted Sobolev spaces, J. Math. Pures Appl. 76 (1997) 55–81], authors study Dirichlet and Neumann problems for the Laplace operator in exterior domains of Rn. This paper extends this study to the resolution of a mixed exterior Laplace's problem. Here, we give existence, unicity and regularity results in Lp's theory with 1<p<∞, in weighted Sobolev spaces
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
New Estimates For The Div-curl-grad Operators And Elliptic Problems With L1-data In The Whole Space And In The Half-space
No full textIn this paper, we study the div-curl-grad operators and some elliptic problems in the whole space Rn and in the half-space R+n, with n≥2. We consider data in weighted Sobolev spaces and in L1. © 2011 Elsevier Inc.250731503195Adams, R.A., (2003) Sobolev Spaces, , Academic Press, New YorkAlliot, F., Amrouche, C., The Stokes problem in Rn: an approach in weighted Sobolev spaces (1999) Math. Models Methods Appl. Sci., 9, pp. 723-754Amrouche, C., The Neumann problem in the half-space (2002) C. R. Acad. Sci. Paris, I 335, pp. 151-156Amrouche, C., Girault, V., Giroire, J., Weighted Sobolev spaces for the Laplace equation in Rn (1994) J. Math. Pures Appl., 73 (6), pp. 579-606Amrouche, C., Girault, V., Giroire, J., Dirichlet and Neumann exterior problems for the n-dimensional Laplace operator: an approach in weighted Sobolev spaces (1997) J. Math. Pures Appl., 76 (1), pp. 55-81Amrouche, C., Neasová, S., Laplace equation in the half-space with a nonhomogeneous Dirichlet boundary condition (2001) Math. Bohem., 126 (2), pp. 265-274Amrouche, C., Neasová, S., Raudin, Y., Very weak, generalized and strong solutions to the Stokes system in the half-space (2008) J. Differential Equations, 244, pp. 887-915Amrouche, C., Raudin, Y., From strong to very weak solutions to the Stokes system with Navier boundary conditions in the half-space (2009) SIAM J. Math. Anal., 41 (5), pp. 1792-1815Amrouche, C., Razafison, U., The stationary Oseen equations in R3. An approach in weighted Sobolev spaces (2007) J. Math. Fluids Mech., 9 (2), pp. 211-225Bourgain, J., Brézis, H., On the equation divY=f and application to control of phases (2002) J. Amer. Math. Soc., 16 (2), pp. 393-426Bourgain, J., Brézis, H., New estimates for elliptic equations and Hodge type systems (2007) J. Eur. Math. Soc. (JEMS), 9 (2), pp. 277-315Bourgain, J., Brézis, H., Sur l'équation divu=f (2002) C. R. Acad. Sci. Paris, I 334, pp. 973-976Bourgain, J., Brézis, H., New estimates for the Laplacian, the div-curl, and related Hodge systems (2003) C. R. Acad. Sci. Paris, I 338, pp. 539-543Brézis, H., (1999) Analyse fonctionnelle: Théorie et applications, , Dunod, ParisBrézis, H., Van Schaftingen, J., Boundary estimates for elliptic systems with L1-data (2007) Calc. Var. Partial Differential Equations, 30 (3), pp. 369-388Deny, J., Lions, J.L., Les espaces du type de Beppo Levi (1954) Ann. Inst. Fourier (Grenoble), 5, pp. 305-370Girault, V., The gradient, divergence, curl and Stokes operators in weighted Sobolev spaces of R3 (1992) J. Math. Sci. Univ. Tokyo (Sec. IA), 39 (2), pp. 279-307Hanouzet, B., Espaces de Sobolev avec poids application au problème de Dirichlet dans un demi espace (1971) Rend. Semin. Mat. Univ. Padova, 46, pp. 227-272Miyakawa, T., Hardy spaces of solenoidal vector fields, with applications to the Navier-Stokes equations (1996) Kyushu J. Math., 50, pp. 1-64Miyakawa, T., On L1-stability of stationary Navier-Stokes flows in Rn (1997) J. Math. Sci. Univ. Tokyo, 4, pp. 67-119Payne, L.E., Weinberger, H.F., Note on a lemma of Finn and Gilbarg (1957) Acta Math., 98, pp. 297-299Van Schaftingen, J., Estimates for L1-vector fields (2004) C. R. Acad. Sci. Paris, I 339, pp. 181-18
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
A Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
Singular boundary condition for a degenerated turbulent toy model
No full textWe consider a toy model with the Prandtl mixing lenght as eddy viscosity, that
vanishes at the boundary, and a Navier like friction law as boundary condition. We address the paradox of the degeneracy of the boundary condition, which we approach by
a problem of singular perturbations. We show a convergence theorem for well-prepared
source terms, and we illustrate our analysis with a series of analytical examples, showing blow up cases and convergence cases for well-prepared dat
A 0.12mm<sup>2</sup> Wien-Bridge Temperature Sensor with 0.1°C (3σ) Inaccuracy from -40°C to 180°C
No full text Resistor-based temperature sensors can achieve much higher resolution and energy efficiency than conventional BJT-based sensors [1], but they typically occupy more area (> 0.25 mm 2 ) and have lower operating temperatures (le 125 {circ} {C}) [2]-[4]. This work describes a 0.12mm 2 resistor-based sensor that uses a Wien-bridge (WB) filter to achieve 0.1 {circ} {C} (3 sigma) inaccuracy from - 40 {circ} {C} to 180 {circ} {C}. Compared to a state-of-the-art WB sensor [4], it occupies 6 × less area and achieves comparable relative accuracy over a 76% wider operating range. Session 10.3 Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic InstrumentationMicroelectronic
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