646 research outputs found
Measuring satisfaction in societies with opinion leaders and mediators
An opinion leader-follower model (OLF) is a two-action collective decision-making model for societies, in which three kinds of actors are considered:Preprin
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Coherent control of the photoinduced transition in a strongly correlated material
The use of intense tailored light fields is the perfect tool to achieve ultrafast control of electronic properties in quantum materials. Among them, Mott insulators are materials in which strong electron-electron interactions drive the material into an insulating phase. When shining a Mott insulator with a strong laser pulse, the electric field may induce the creation of doublon-hole pairs, triggering a photoinduced transition into a metallic state. In this paper, we take advantage of the threshold character of this photoinduced transition and we propose a setup that consists of a midinfrared laser pulse and a train of short pulses separated by a half period of the midinfrared with alternating phases. By varying the time delay between the two pulses and the internal carrier envelope phase of the short pulses, we achieve control of the phase transition, which leaves its fingerprint at its high harmonic spectrum
Expansion of a one-dimensional Bose gas: the role of interactions and kinetic-energy driving
We study the expansion of a one-dimensional boson gas by suddenly increasing
the length of the chain where it resides. We consider three initial
ground-state configurations: the Mott insulator, the conventional superfluid
clumped around zero momentum, and the cat-like state with peaks at momenta , resulting from rapid kinetic driving. In turn, we consider three types
of expansion: spectroscopic (with interactions tuned to zero), dynamic (with
standard short-range repulsive interactions) and under kinetic driving. The
numerical calculations are exact. We compute the momentum- and real-space
one-particle densities as well as the two-particle momentum correlations. The
spectroscopic time-of-flight experiment faithfully reflects the initial
momentum distribution. For the dynamic expansion starting from an insulator, we
reproduce the non-equilibrium quasi-condensation into momenta while
noticing correlations in the momentum distribution, and provide an intuitive
physical picture. A discussion of various measures of the momentum correlations
is also presented.Comment: 19 pages, 8 figures. Slightly revised in response to referee report
Detection of possible undiagnosed cases of diabetes in customers at a community pharmacy
Entre el 28 de marzo y el 28 de junio de 2005 se desarrolló una campaña de detección de posibles diabéticos nodiagnosticados, de excelente aceptación y repercusión entre los usuarios de una ofi cina de farmacia. El Test deRiesgo de Diabetes de la American Diabetes Association (ADA) fue utilizado en la selección de las personas que sesometerían a una determinación de glucemia capilar en ayunas, mediante metodología basada en reacciones colorimétricas.Una puntuación de diez puntos o más en este test, fue el requisito preciso para ello. El 53,0 % de lostest obtuvieron una puntuación igual o superior a diez y el 36,4 % de las determinaciones de glucemia realizadasdieron un resultado mayor o igual a 110 mg/dL, de lo que se deduce la utilidad del test ADA en el enriquecimientode la muestra objeto de estudio. Las personas con estos valores elevados de glucemia, fueron remitidas al médicopara su valoración.As part of a localised health care initiative, a campaign for the detection of possible undiagnosed cases of diabeteswas carried out from the 28th of March to the 28th of June 2005, at a local community pharmacy, giving good resultsand a high level of acceptance from pharmacy customers. The diabetes risk test proposed by the American DiabetesAssociation (ADA) was used in the selection process of persons for blood glucose testing under conditions of previousfasting (8-10 hrs). The ADA test is based on a points scoring system, in which a score of 10 points is considered ascause for recommendation for blood glucose testing. The methodology used for the determination of blood glucoselevels in this research was that based on colorimetric reactions. In the ADA test, 53.0% of cases scored ten points orover, while 36.4% of blood glucose determinations resulted in levels equal to or over 110 mg/dL, thus indicating theusefulness of this tool for the purposes of research. Persons with such high levels of blood glucose were referred to aphysician for analysis
Three-dimensional Reconstruction of the Caspe Geological Structure (Spain) for Evaluation as a Potential CO2 Storage Site
The Caspe geological structure was formed by the convergence of the Iberian Range and the Catalonian Coastal Range, during the Tertiary compression. Traditionally, the Caspe structure has been interpreted from seismic profiles without considering surface structural data. The aim of this study is to build a 3D geological model taking into account the structural data from the geological map, stress fields and lineaments, and evaluate its possibility as potential CO2 storage site. Four surfaces have been modelled: Buntsandstein Top, Muschelkalk-I Top, Muschelkalk-II Top and Cenozoic Bottom. Considering the geometry and depth for storage the target reservoir was considered to be the Buntsandstein facies. The available seismic data indicate that the Buntsandstein facies top is at approximately 500 m depth and hosts a deep saline aquifer. The target reservoir series include the conglomerate and sandstone of the Hoz del Gallo and Cañizar Fms (Buntsandstein Facies) with an average thickness of 500 m and 21% porosity. The seal comprises the shales and silts of the Röt Fm with an average thickness of 100-150 m. The structure volume was calculated based on the -500 mbsl for the Buntsandstein top deepest closed contour lines. The estimated volume is 5, 800 Mm3 with most of CO2 in gaseous state
Detection of possible undiagnosed cases of diabetes in customers at a community pharmacy
Entre el 28 de marzo y el 28 de junio de 2005 se desarrolló una campaña de detección de posibles diabéticos no
diagnosticados, de excelente aceptación y repercusión entre los usuarios de una ofi cina de farmacia. El Test de
Riesgo de Diabetes de la American Diabetes Association (ADA) fue utilizado en la selección de las personas que se
someterían a una determinación de glucemia capilar en ayunas, mediante metodología basada en reacciones colorimétricas.
Una puntuación de diez puntos o más en este test, fue el requisito preciso para ello. El 53,0 % de los
test obtuvieron una puntuación igual o superior a diez y el 36,4 % de las determinaciones de glucemia realizadas
dieron un resultado mayor o igual a 110 mg/dL, de lo que se deduce la utilidad del test ADA en el enriquecimiento
de la muestra objeto de estudio. Las personas con estos valores elevados de glucemia, fueron remitidas al médico para su valoración.As part of a localised health care initiative, a campaign for the detection of possible undiagnosed cases of diabetes
was carried out from the 28th of March to the 28th of June 2005, at a local community pharmacy, giving good results
and a high level of acceptance from pharmacy customers. The diabetes risk test proposed by the American Diabetes
Association (ADA) was used in the selection process of persons for blood glucose testing under conditions of previous
fasting (8-10 hrs). The ADA test is based on a points scoring system, in which a score of 10 points is considered as
cause for recommendation for blood glucose testing. The methodology used for the determination of blood glucose
levels in this research was that based on colorimetric reactions. In the ADA test, 53.0% of cases scored ten points or
over, while 36.4% of blood glucose determinations resulted in levels equal to or over 110 mg/dL, thus indicating the
usefulness of this tool for the purposes of research. Persons with such high levels of blood glucose were referred to a physician for analysis
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