19,351 research outputs found
Desarrollo de un framework en C# para control de arduino uno
El internet de las cosas se define de forma general, como la interacción de objetos de la vida cotidiana con los seres humanos y es uno de los temas de investigación más importantes de nuestros tiempos, sin embargo, en México no se tiene el avance que se espera de un país con su nivel de desarrollo. Las razones de esto son la baja divulgación de este tema en las universidades y en general en las escuelas; el nivel de complejidad, ya que se requiere conocer temas de programación, electrónica, sistemas digitales y comunicaciones y el tiempo de desarrollo, debido a que es necesario escribir código en dos lenguajes diferentes, el de la placa de desarrollo y otro de alto nivel. Este trabajo se centra en mostrar a los profesionales de la computación y a los interesados en el uso de IoT la forma de desarrollar aplicaciones con el uso de la placa Arduino y C#, además, como resultado del trabajo de investigación, se genera un marco de trabajo para la elaboración rápida de aplicaciones de este tipo
Transverse parton momenta in single inclusive hadron production in annihilation processes
We study the transverse momentum distributions of single inclusive hadron
production in annihilation processes. Although the only
available experimental data are scarce and quite old, we find that the
fundamental features of transverse momentum dependent (TMD) evolution,
historically addressed in Drell-Yan processes and, more recently, in
Semi-inclusive deep inelastic scattering processes, are visible in annihilations as well. Interesting effects related to its non-perturbative
regime can be observed. We test two different parameterizations for the
dependence of the cross section: the usual Gaussian distribution and
a power-law model. We find the latter to be more appropriate in describing this
particular set of experimental data, over a relatively large range of
values. We use this model to map some of the features of the data within the
framework of TMD evolution, and discuss the caveats of this and other possible
interpretations, related to the one-dimensional nature of the available
experimental data
On the Jacobi-Metric Stability Criterion
We investigate the exact relation existing between the stability equation for
the solutions of a mechanical system and the geodesic deviation equation of the
associated geodesic problem in the Jacobi metric constructed via the
Maupertuis-Jacobi Principle. We conclude that the dynamical and geometrical
approaches to the stability/instability problem are not equivalent.Comment: 14 pages, no figure
Flexible Parametrization of Generalized Parton Distributions: The Chiral-Odd Sector
We present a physically motivated parameterization of the chiral-odd
generalized parton distributions. The parametrization is an extension of our
previous one in the chiral-even sector which was based on the reggeized diquark
model. While for chiral even generalized distributions a quantitative fit with
uncertainty estimation can be performed using deep inelastic scattering data,
nucleon electromagnetic, axial and pseudoscalar form factors measurements, and
all available deeply virtual Compton scattering data, the chiral-odd sector is
far less constrained. While awaiting the analysis of measurements on
pseudoscalar mesons exclusive electroproduction which are key for the
extraction of chiral odd GPDs, we worked out a connection between the
chiral-even and chiral-odd reduced helicity amplitudes using Parity
transformations. The connection works for a class of models including
two-components models. This relation allows us to estimate the size of the
various chiral odd contributions and it opens the way for future quantitative
fits.Comment: 35 pages, 18 figures, text changes, corrected typos, added fig.
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