Search results for " Wilson"
showing 10 items of 13 documents
Wilson's disease in Spain: validation of sources of information used by the Rare Diseases Registries
2021
[ES] Objetivo: Evaluar las fuentes de información empleadas por los Registros Autonómicos de Enfermedades Raras (RAER) para la captación de la enfermedad de Wilson en España, calcular su prevalencia y mortalidad, y describir las características sociodemográficas de las personas afectadas. Método: Estudio epidemiológico transversal, periodo 2010-2015. Se captaron los posibles casos mediante los códigos 275.1 (CIE-9-MC), E83.0 (CIE-10) y 905 ORPHA en 15 RAER y el Registro de Pacientes de Enfermedades Raras del Instituto de Salud Carlos III. Los diagnósticos fueron validados revisando la documentación clínica. Se calcularon el valor predictivo positivo (VPP) de las fuentes de información, la p…
On the strength of the U A (1) anomaly at the chiral phase transition in N f = 2 QCD
2016
We study the thermal transition of QCD with two degenerate light flavours by lattice simulations using $O(a)$-improved Wilson quarks. Temperature scans are performed at a fixed value of $N_t = (aT)^{-1}=16$, where $a$ is the lattice spacing and $T$ the temperature, at three fixed zero-temperature pion masses between 200 MeV and 540 MeV. In this range we find that the transition is consistent with a broad crossover. As a probe of the restoration of chiral symmetry, we study the static screening spectrum. We observe a degeneracy between the transverse isovector vector and axial-vector channels starting from the transition temperature. Particularly striking is the strong reduction of the split…
Density distributions in the $B$ meson
2016
We report on a two-flavor lattice QCD study of the axial, charge and matter distributions of the $B$ meson and its first radial excitation. As our framework is the static limit of Heavy Quark Effective Theory (HQET), taking their Fourier transform gives access to several form factors at the kinematical point $q^2=0$. Moreover they provide some useful information on the nature of an excited state, i.e. a radial excitation of a quark-antiquark bound state or a multihadron state.
Light Quark Masses from Lattice Quark Propagators at Large Momenta
1999
We compute non-perturbatively the average up-down and strange quark masses from the large momentum (short-distance) behaviour of the quark propagator in the Landau gauge. This method, which has never been applied so far, does not require the explicit calculation of the quark mass renormalization constant. Calculations were performed in the quenched approximation, by using O(a)-improved Wilson fermions. The main results of this study are ml^RI(2GeV)=5.8(6)MeV and ms^RI(2GeV)=136(11)MeV. Using the relations between different schemes, obtained from the available four-loop anomalous dimensions, we also find ml^RGI=7.6(8)MeV and ms^RGI=177(14)MeV, and the MSbar-masses, ml^MS(2GeV)=4.8(5)MeV and …
Stany Zjednoczone w I wojnie światowej a odzyskanie niepodległości przez Polskę w 1918 roku w ujęciu współczesnej szkolnej narracji podręcznikowej
2018
Accotding to many historians, the US accession to the war in 1917 was of significant importance for the final resolution of the conflict, and thus also the revival of the independedt Polish state. In the article, we analyse this issue on the basic of contemporary Polish school history education. Textbooks for high school and technical school students were used as the source. Their authors agreed that "the entrance of Uncle Sam into the game", that is, the accession of the United States to the war in 1917 was one of the landmark moments in its over four - year history. The US president Thomas W. Wilson from January 8, 1918, in which a separate point about the revival of the independent Polis…
Dynamical twisted mass fermions with light quarks
2007
We present results of dynamical simulations with 2 flavours of degenerate Wilson twisted mass quarks at maximal twist in the range of pseudo scalar masses from 300 to 550 MeV. The simulations are performed at one value of the lattice spacing a \lesssim 0.1 fm. In order to have O(a) improvement and aiming at small residual cutoff effects, the theory is tuned to maximal twist by requiring the vanishing of the untwisted quark mass. Precise results for the pseudo scalar decay constant and the pseudo scalar mass are confronted with chiral perturbation theory predictions and the low energy constants F, \bar{l}_3 and \bar{l}_4 are evaluated with small statistical errors.
Che ci fa Carlo Scarpa in scena a Oslo?
2017
Lo spettacolo teatrale Edda (di Jon Fosse per la regia di Robert Wilson), apre una riflessione sul significato dell’astrazione. Quando i riferimenti culturali rappresentano la riduzione in simboli della realtà, e quando invece sono irriconoscibili segni?
L'altro Novecento. Il minimalismo nella musica del nostro tempo
2005
Il termine "minimalismo" si diffonde nel lessico della critica d'arte fin dall'inizio degli anni Trenta, ma è divenuto oggi sinonimo di linearità e rigore negli ambiti dell'architettura, delle arti figurative e della musica, ma anche nei mondi paralleli della moda, della pubblicità e del design. Assumendo l'idea del rapporto fra "ornamento e delitto" come fil rouge che attraversa il Novecento e congliunge, nel segno di un'ascetica ricerca dell'essenza, le forme primordiali di Brancusi e gli aforismi di Anton Webern alle grandi sculture inespressive di Morris e Judd e al teatro di Robert Wilson, il volume è costituito da otto capitoli/saggi che si configurano come altrettante riflessioni sul…
La amazonificación de la logística: Comercio electrónico, trabajo y explotación en la última milla
2021
Structure of longitudinal chromomagnetic fields in high energy collisions
2014
We compute expectation values of spatial Wilson loops in the forward light cone of high-energy collisions. We consider ensembles of gauge field configurations generated from a classical Gaussian effective action as well as solutions of high-energy renormalization group evolution with fixed and running coupling. The initial fields correspond to a color field condensate exhibiting domain-like structure over distance scales of order the saturation scale. At later times universal scaling emerges at large distances for all ensembles, with a nontrivial critical exponent. Finally, we compare the results for the Wilson loop to the two-point correlator of magnetic fields.