Search results for "530"
showing 10 items of 1476 documents
gg→HH : Combined uncertainties
2021
In this paper we discuss the combination of the usual renormalization and factorization scale uncertainties of Higgs-pair production via gluon fusion with the novel uncertainties originating from the scheme and scale choice of the virtual top mass. Moreover, we address the uncertainties related to the top-mass definition for different values of the trilinear Higgs coupling and their combination with the other uncertainties.
Microscopic origin of the nonexponential dynamics in a glassy crystal
2003
The origin of the slow relaxation and of the dynamic heterogeneity is studied for an orientation-ally disordered crystal, orthocarborane, composed of quasi-icosahedrally shaped molecules. Multidimensional deuteron magnetic resonance reveals that large jump angles dominate their complex, anisotropic reorientational motion. It involves a sequence of small-angle tilts about locally preferred axes as well as symmetry adapted threefold jumps. The intrinsic dynamics of this glassy crystal is nonexponential and can be fully accounted for in terms of the tilt and jump motion.
Correlation of primary and secondary relaxations in a supercooled liquid
2006
The widespread assumption that primary and secondary relaxations in glass-forming materials are independent processes is scrutinized using spin-lattice relaxation weighted stimulated-echo spectroscopy. This nuclear magnetic resonance (NMR) technique is simultaneously sensitive to the dynamics on well-separated time scales. For the deeply supercooled liquid sorbitol, which exhibits a strong secondary relaxation, the primary relaxation (that is observable using NMR) can be modified by suppressing the contributions of those subensembles which are characterized by relatively slow secondary relaxations. This is clear evidence for a correlation between primary and secondary relaxation times. In t…
¿Movilidad inclusiva o accesibilidad inclusiva?
2017
<p>“La movilidad inclusiva” es parte de las prioridades políticas definidas por numerosos países europeos para referirse a la dimensión social del transporte o las políticas de movilidad cotidiana. De forma general, la inclusión se refiere a la cohesión social, que ha sido uno de los objetivos declarados de la Unión Europea desde el inicio de los años 2000. Como mecanismo para facilitar el acceso a las oportunidades (empleo, comercio, servicios, etc.), la movilidad individual es actualmente considerada un prerrequisito necesario para la participación de las personas en las actividades sociales. En contraste, la inmovilidad o “ausencia de movilidad” sería un factor de exclusión social.…
La consagración de los derechos fundamentales: de principios generales a texto fundacional de la Unión Europea
2014
<p>El autor argumenta que el reconocimiento formal de los derechos fundamentales como parte de los fundamentos comunes de la UE mediante la remisión a la Carta de los Derechos Fundamentales en el Tratado de Lisboa (otorgándole carácter vinculante y, por ende, elevando su rango y confiriéndole el mismo valor jurídico que los Tratados) ha proporcionado una mayor apariencia constitucional a la UE, pero no un nivel más generoso de protección y de disfrute de la ciudadanía. En efecto, además de haber prescindido de garantías específicas, la Carta de la UE ha introducido diversas asimetrías inaceptables, tales como la quiebra del principio de indivisibilidad (los derechos civiles y los soci…
Kinyarwanda and Kirundi: On Colonial Divisions, Discourses of National Belonging, and Language Boundaries
2019
The development of the Bantu languages Kinyarwanda and Kirundi is entangled within the colonial histories of Rwanda and Burundi, first under German and then Belgian rule. From the turn of the twentieth century on, missionaries compiled grammars and dictionaries of the two mutually intelligible languages, contributing to the development and instrumentalisation of two prestigious varieties out of a larger dialect continuum. In this contribution, I trace the missionary and colonial activities of corpus planning and textualisation and summarise how Kinyarwanda and Kirundi turned into official languages with distinct linguistic boundaries. The central research question is how speakers of Kinyarw…
Cyclotron radiation emission spectroscopy signal classification with machine learning in project 8
2019
The Cyclotron Radiation Emission Spectroscopy (CRES) technique pioneered by Project 8 measures electromagnetic radiation from individual electrons gyrating in a background magnetic field to construct a highly precise energy spectrum for beta decay studies and other applications. The detector, magnetic trap geometry, and electron dynamics give rise to a multitude of complex electron signal structures which carry information about distinguishing physical traits. With machine learning models, we develop a scheme based on these traits to analyze and classify CRES signals. Understanding and proper use of these traits will be instrumental to improve cyclotron frequency reconstruction and help Pro…
All-Atom simulations disclose how cytochrome reductase reshapes the substrate access/egress routes of its partner cyp450s
2020
Cytochromes P450 enzymes (CYP450s) promote the oxidative metabolism of a variety of substrates via the electrons supplied by the cytochrome P450 reductase (CPR) and upon formation of a CPR/CYP450 adduct. In spite of the pivotal regulatory importance of this process, the impact of CPR binding on the functional properties of its partner CYP450 remains elusive. By performing multiple microsecond-long all-Atom molecular dynamics simulations of a 520â »000-Atom model of a CPR/CYP450 adduct embedded in a membrane mimic, we disclose the molecular terms for their interactions, considering the aromatase (HA) enzyme as a proxy of the CYP450 family. Our study strikingly unveils that CPR binding alters…
Measurement of dijet production with a veto on additional central jet activity in pp collisions at sqrt(s)=7 TeV using the ATLAS detector
2011
A measurement of jet activity in the rapidity interval bounded by a dijet system is presented. Events are vetoed if a jet with transverse momentum greater than 20 GeV is found between the two boundary jets. The fraction of dijet events that survive the jet veto is presented for boundary jets that are separated by up to six units of rapidity and with mean transverse momentum 50 < p¯T < 500 GeV. The mean multiplicity of jets above the veto scale in the rapidity interval bounded by the dijet system is also presented as an alternative method for quantifying perturbative QCD emission. The data are compared to a next-to-leading order plus parton shower prediction from the powheg-box, an all-order…
"Table 56" of "Tuning and test of fragmentation models based on identified particles and precision event shape data."
1996
XP distribution for XI(1530)0 production.. Data read from plot.