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[Letter from Ricardo Hernandez to D. Jack Davis, March 31, 1993]
No full textA letter from Ricardo Hernandez to D. Jack Davis, a co-director of the NTIEVA program. The letter is about the funding application to the TCA and includes a list of applicants and their information
One-loop effective potential in M4 x T2 with and without 't hooft flux
No full text43 pages, 3 figures.We review the basic notions of compactification in the presence of a back-
ground flux. In extra-dimentional models with more than five dimensions, Scherk
and Schwarz boundary conditions have to satisfy’t Hooft consistency conditions.
Different vacuum configurations can be obtained, depending whether trivial or
non-trivial’t Hooft flux is considered. The presence of the “magnetic” back-
ground flux provide, in addition, a mechanism for producing four-dimensional
chiral fermions. Particularizing to the six-dimensional case, we calculate the
one-loop effective potential for a U(N) gauge theory on M4 × T 2. We firstly
review the well known results of the trivial ’t Hooft flux case, where one-loop
contributions produce the usual Hosotani dynamical symmetry breaking. Finally
we applied our result for describing, for the first time, the one-loop contributions
in the non-trivial’t Hooft flux case.The work of A.F. Faedo, D. Hernandez and S. Rigolin has been partially
supported by CICYT through the project FPA2006-05423 and by CAM through the
project HEPHACOS, P-ESP-00346. D. Hern´andez acknowledges financial support
from the MEC through FPU grant AP-2005-3603. S.Rigolin aknowledges also the
partial support of an Excellence Grant of Fondazione Cariparo and of the European
Programme “Unification in the LHC era” under the contract PITN-GA-2009-237920
(UNILHC)Peer reviewe
[Braulio Hernandez]
No full textPhotograph of Braulio Hernandez visiting a grave. Text on the back of the photograph reads: "Braulio Hernandez visiting grave of friend killed in battle May 1911." The grave marker to the right reads: "MARIANO RIOS, FALLECIO A LOS 27 ANOS DE EDAD, MAYO 11 DE 1911, El Paso, Texas." The small headstone in the center reads: "Capitan D. Madrid." A car is visible in the background
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Dr. Hector P. Garcia sits between National Queen Priscilla D. Hernandez and a lady guest (photograph)
No full textDr. Hector P. Garcia sits between National Queen Priscilla D. Hernandez and a lady guest
Connecting shear flow and vortex array instabilities in annular atomic superfluids
No full textAt the interface between two fluid layers in relative motion, infinitesimal fluctuations can be exponentially amplified, inducing vorticity and the breakdown of laminar flow. While shear flow instabilities in classical fluids have been extensively observed in various contexts, controlled experiments in the presence of quantized circulation are quite rare. Here we observe how the contact interface between two counter-rotating atomic superflows develops into an ordered circular array of quantized vortices, which loses stability and rolls up into vortex clusters. We extract the instability growth rates and find that they obey the same scaling relations across different superfluid regimes, ranging from weakly interacting bosonic to strongly correlated fermionic pair condensates. Our results establish connections between vortex arrays and shear flow instabilities, suggesting a possible interpretation of the observed quantized vortex dynamics as a manifestation of the underlying unstable flow. Moreover, they open the way for exploring out-of-equilibrium phenomena such as vortex matter phase transitions and the spontaneous emergence and decay of two-dimensional quantum turbulence
Hernandez Church
No full textOil painting of the Hernandez adobe church in New Mexico against a backdrop of blue sky and foothills. The church is plastered in a light-colored stucco and there is a steeple with a cross at the top.There is a wall with an open doorway extending from the front of the church, creating a courtyard ourside the church entrance
Análisis de la satisfacción de clientes de supermercados. Caso Gran D Obrero
No full textAnálisis de la satisfacción de clientes de supermercados. Caso Gran D Obrer
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
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