13 research outputs found
“Algunos tienen la prosa corrompida y enfadado el mundo…” reza Francisco de Quevedo
La preocupación de los propios creadores por establecer pautas sobre el quehacer literario ha sido una constante de todos los tiempos desde los clásicos hasta la actualidad. No escapan a esta reflexión los escritores áureos, quienes tratan de legitimarlas a través de criterios normativos que suelen presentar ciertos ribetes de parodia, como en el caso que nos ocupa:
Francisco de Quevedo y sus juveniles premáticas. Las premáticas eran reglamentaciones legales para unificar las costumbres, que pulularon luego de la invención de la imprenta.
Ante esta saturación de normas, surge en el Siglo de Oro la llamada prosa festiva con intenciones satírico-burlescas sobre dichas ordenanzas. “Quevedo tras los quevedos”, con su mirada sagaz de la sociedad madrileña, brinda al lector una radiografía dialéctica del mundillo de los escritores y de los usos lingüísticos, la cual hace esbozar una sonrisa al lector para luego dejarle una amarga reflexión. Sus considerandos emanan de la Premática del desengaño sobre los poetas güeros, que aparece en Historia de la vida del Buscón, y de la Premática de 1600. Con este trabajo se busca indagar la concepción quevediana de la profesión de escritor, tratando de escudriñar en el plano irónico burlesco con el que se dirige a “ciertas personas deseosas del bien común”.Centro de Estudios de Teoría y Crítica Literari
A new composition-sensitive parameter for Ultra-High Energy Cosmic Rays
A new family of parameters intended for composition studies in cosmic ray
surface array detectors is proposed. The application of this technique to
different array layout designs has been analyzed. The parameters make exclusive
use of surface data combining the information from the total signal at each
triggered detector and the array geometry. They are sensitive to the combined
effects of the different muon and electromagnetic components on the lateral
distribution function of proton and iron initiated showers at any given primary
energy. Analytical and numerical studies have been performed in order to assess
the reliability, stability and optimization of these parameters. Experimental
uncertainties, the underestimation of the muon component in the shower
simulation codes, intrinsic fluctuations and reconstruction errors are
considered and discussed in a quantitative way. The potential discrimination
power of these parameters, under realistic experimental conditions, is compared
on a simplified, albeit quantitative way, with that expected from other surface
and fluorescence estimators.Comment: 27 pages, 17 figures. Submitted to a refereed journa
Performance of the ToF detectors in the foot experiment
The FOOT (FragmentatiOn Of Target) experiment aims to deter- mine the fragmentation cross-sections of nuclei of interest for particle therapy and radioprotection in space. The apparatus is composed of several detectors that allow fragment identification in terms of charge, mass, energy and direction. The frag- ment time of flight (ToF) along a lever arm of ∼2 m is used for particle ID, requiring a resolution below 100ps to achieve a sufficient resolution in the fragment atomic mass identification. The timing performance of the ToF system evaluated with 12C and 16O beams is reviewed in this contribution
Upper limit on the cosmic-ray photon fraction at EeV energies from the Pierre Auger Observatory
From direct observations of the longitudinal development of ultra-high energy
air showers performed with the Pierre Auger Observatory, upper limits of 3.8%,
2.4%, 3.5% and 11.7% (at 95% c.l.) are obtained on the fraction of cosmic-ray
photons above 2, 3, 5 and 10 EeV (1 EeV = 10^18 eV) respectively. These are the
first experimental limits on ultra-high energy photons at energies below 10
EeV. The results complement previous constraints on top-down models from array
data and they reduce systematic uncertainties in the interpretation of shower
data in terms of primary flux, nuclear composition and proton-air
cross-section.Comment: 20 pages, 7 figures, 2 tables. Minor changes. Accepted by
Astroparticle Physic
"Algunos tienen la prosa corrompida y enfadado el mundo..." reza Francisco de Quevedo
La preocupación de los propios creadores por establecer pautas sobre el quehacer literario ha sido una constante de todos los tiempos desde los clásicos hasta la actualidad. No escapan a esta reflexión los escritores áureos, quienes tratan de legitimarlas a través de criterios normativos que suelen presentar ciertos ribetes de parodia, como en el caso que nos ocupa: Francisco de Quevedo y sus juveniles premáticas. Las premáticas eran reglamentaciones legales para unificar las costumbres, que pulularon luego de la invención de la imprenta. Ante esta saturación de normas, surge en el Siglo de Oro la llamada prosa festiva con intenciones satírico-burlescas sobre dichas ordenanzas. "Quevedo tras los quevedos", con su mirada sagaz de la sociedad madrileña, brinda al lector una radiografía dialéctica del mundillo de los escritores y de los usos lingüísticos, la cual hace esbozar una sonrisa al lector para luego dejarle una amarga reflexión. Sus considerandos emanan de la Premática del desengaño sobre los poetas güeros, que aparece en Historia de la vida del Buscón, y de la Premática de 1600. Con este trabajo se busca indagar la concepción quevediana de la profesión de escritor, tratando de escudriñar en el plano irónico burlesco con el que se dirige a "ciertas personas deseosas del bien común"
Performance of the ToF detectors in the FOOT experiment
The FOOT (FragmentatiOn Of Target) experiment aims to determine the fragmentation cross-sections of nuclei of interest for particle therapy and radioprotection in space. The apparatus is composed of several detectors that allow fragment identification in terms of charge, mass, energy and direction. The fragment time of flight (ToF) along a lever arm of ∼2 m is used for particle ID, requiring a resolution below 100 ps to achieve a sufficient resolution in the fragment atomic mass identification. The timing performance of the ToF system evaluated with 12C and 16O beams is reviewed in this contribution
Perineal and pelvic aggressive angiomyxoma: spontaneous regression after hormonal replacement therapy withdrawal assessed by 3T magnetic resonance
Aggressive angiomyxoma (AA) is a rare mesenchymal tumour which mainly arises in the soft tissue of the pelvis and perineum in women of reproductive age. AA usually shows an aggressive behaviour, with a high rate of incomplete surgical excision and post-surgical recurrence. Most cases of AA exhibit oestrogen and/or progesterone receptors; in these cases, maintenance of a hypo-oestrogenic state can be helpful in the medical management of this tumour. We describe a case of spontaneous reduction in size of an AA during a 6-month period of hormonal replacement therapy withdrawal, assessed by MRI using a 3T magnet
Alignment and Calibration Experience Under LHC Data-Taking Conditions in the CMS Experiment
Full achievement of the physics potential of the detector and timely
preparation of results for conferences require a fast turnaround of
alignment and calibration workflows. The CMS experiment has set up a
powerful framework and infrastructure for alignment and calibration,
which is based on dedicated skims providing a highly compact specific
input for the various workflows computing the constants, and includes
a prompt calibration concept which allows determination of highly
time-dependent constants on the fly. The CMS alignment and calibration
model has been commissioned step by step with cosmic muons and passed
a main challenge with the first LHC high energy run and the
preparation of physics results for the summer conferences of this
year. This article reviews detailed experience from this extended
operation, including results from selected workflows